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authorkhemendra kumar <khemendra.kumar13@gmail.com>2017-12-08 18:06:52 +0530
committerDamjan Marion <dmarion.lists@gmail.com>2017-12-09 13:24:39 +0000
commit34719e37bf820e8398ca9159725f7f4c42764aeb (patch)
tree0103490ec7c18b6c1a46ef59fcca0722e7061764 /src/vnet/dhcp/client.c
parent87a137c77b53753710a0706a35bee5574c0a9c1a (diff)
VPP-249 Coding standards cleanup - vnet/vnet/dhcp
Change-Id: I45a166b5780675d2bc6fe90595f413725704eaa8 Signed-off-by: khemendra kumar <khemendra.kumar13@gmail.com>
Diffstat (limited to 'src/vnet/dhcp/client.c')
-rw-r--r--src/vnet/dhcp/client.c832
1 files changed, 402 insertions, 430 deletions
diff --git a/src/vnet/dhcp/client.c b/src/vnet/dhcp/client.c
index 5986438b85f..8043bf22d43 100644
--- a/src/vnet/dhcp/client.c
+++ b/src/vnet/dhcp/client.c
@@ -18,106 +18,91 @@
#include <vnet/fib/fib_table.h>
dhcp_client_main_t dhcp_client_main;
-static u8 * format_dhcp_client_state (u8 * s, va_list * va);
+static u8 *format_dhcp_client_state (u8 * s, va_list * va);
static vlib_node_registration_t dhcp_client_process_node;
-static void
+static void
dhcp_client_add_rx_address (dhcp_client_main_t * dcm, dhcp_client_t * c)
{
/* Install a local entry for the offered address */
- fib_prefix_t rx =
- {
- .fp_len = 32,
- .fp_addr.ip4 = c->leased_address,
- .fp_proto = FIB_PROTOCOL_IP4,
- };
-
- fib_table_entry_special_add(fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &rx,
- FIB_SOURCE_DHCP,
- (FIB_ENTRY_FLAG_LOCAL));
+ fib_prefix_t rx = {
+ .fp_len = 32,
+ .fp_addr.ip4 = c->leased_address,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ };
+
+ fib_table_entry_special_add (fib_table_get_index_for_sw_if_index
+ (FIB_PROTOCOL_IP4, c->sw_if_index), &rx,
+ FIB_SOURCE_DHCP, (FIB_ENTRY_FLAG_LOCAL));
/* And add the server's address as uRPF exempt so we can accept
* local packets from it */
- fib_prefix_t server =
- {
- .fp_len = 32,
- .fp_addr.ip4 = c->dhcp_server,
- .fp_proto = FIB_PROTOCOL_IP4,
- };
-
- fib_table_entry_special_add(fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &server,
- FIB_SOURCE_URPF_EXEMPT,
- (FIB_ENTRY_FLAG_DROP));
+ fib_prefix_t server = {
+ .fp_len = 32,
+ .fp_addr.ip4 = c->dhcp_server,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ };
+
+ fib_table_entry_special_add (fib_table_get_index_for_sw_if_index
+ (FIB_PROTOCOL_IP4, c->sw_if_index), &server,
+ FIB_SOURCE_URPF_EXEMPT, (FIB_ENTRY_FLAG_DROP));
}
static void
dhcp_client_remove_rx_address (dhcp_client_main_t * dcm, dhcp_client_t * c)
{
- fib_prefix_t rx =
- {
- .fp_len = 32,
- .fp_addr.ip4 = c->leased_address,
- .fp_proto = FIB_PROTOCOL_IP4,
- };
-
- fib_table_entry_special_remove(fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &rx,
- FIB_SOURCE_DHCP);
- fib_prefix_t server =
- {
- .fp_len = 32,
- .fp_addr.ip4 = c->dhcp_server,
- .fp_proto = FIB_PROTOCOL_IP4,
- };
-
- fib_table_entry_special_remove(fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &server,
- FIB_SOURCE_URPF_EXEMPT);
+ fib_prefix_t rx = {
+ .fp_len = 32,
+ .fp_addr.ip4 = c->leased_address,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ };
+
+ fib_table_entry_special_remove (fib_table_get_index_for_sw_if_index
+ (FIB_PROTOCOL_IP4, c->sw_if_index), &rx,
+ FIB_SOURCE_DHCP);
+ fib_prefix_t server = {
+ .fp_len = 32,
+ .fp_addr.ip4 = c->dhcp_server,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ };
+
+ fib_table_entry_special_remove (fib_table_get_index_for_sw_if_index
+ (FIB_PROTOCOL_IP4, c->sw_if_index), &server,
+ FIB_SOURCE_URPF_EXEMPT);
}
static void
dhcp_client_acquire_address (dhcp_client_main_t * dcm, dhcp_client_t * c)
{
- /*
+ /*
* Install any/all info gleaned from dhcp, right here
*/
ip4_add_del_interface_address (dcm->vlib_main, c->sw_if_index,
- (void *) &c->leased_address,
- c->subnet_mask_width, 0 /*is_del*/);
+ (void *) &c->leased_address,
+ c->subnet_mask_width, 0 /*is_del */ );
}
-static void
+static void
dhcp_client_release_address (dhcp_client_main_t * dcm, dhcp_client_t * c)
{
- /*
+ /*
* Remove any/all info gleaned from dhcp, right here. Caller(s)
* have not wiped out the info yet.
*/
ip4_add_del_interface_address (dcm->vlib_main, c->sw_if_index,
- (void *) &c->leased_address,
- c->subnet_mask_width, 1 /*is_del*/);
+ (void *) &c->leased_address,
+ c->subnet_mask_width, 1 /*is_del */ );
}
static void
set_l2_rewrite (dhcp_client_main_t * dcm, dhcp_client_t * c)
{
/* Acquire the L2 rewrite string for the indicated sw_if_index */
- c->l2_rewrite = vnet_build_rewrite_for_sw_interface(
- dcm->vnet_main,
- c->sw_if_index,
- VNET_LINK_IP4,
- 0 /* broadcast */);
+ c->l2_rewrite = vnet_build_rewrite_for_sw_interface (dcm->vnet_main,
+ c->sw_if_index,
+ VNET_LINK_IP4,
+ 0 /* broadcast */ );
}
void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
@@ -127,40 +112,40 @@ dhcp_client_proc_callback (uword * client_index)
{
vlib_main_t *vm = vlib_get_main ();
ASSERT (vlib_get_thread_index () == 0);
- vlib_process_signal_event (vm, dhcp_client_process_node.index,
+ vlib_process_signal_event (vm, dhcp_client_process_node.index,
EVENT_DHCP_CLIENT_WAKEUP, *client_index);
}
-/*
+/*
* dhcp_client_for_us - server-to-client callback.
* Called from proxy_node.c:dhcp_proxy_to_client_input().
* This function first decides that the packet in question is
* actually for the dhcp client code in case we're also acting as
* a dhcp proxy. Ay caramba, what a folly!
*/
-int dhcp_client_for_us (u32 bi, vlib_buffer_t * b,
- ip4_header_t * ip,
- udp_header_t * udp,
- dhcp_header_t * dhcp)
+int
+dhcp_client_for_us (u32 bi, vlib_buffer_t * b,
+ ip4_header_t * ip,
+ udp_header_t * udp, dhcp_header_t * dhcp)
{
- dhcp_client_main_t * dcm = &dhcp_client_main;
- vlib_main_t * vm = dcm->vlib_main;
- dhcp_client_t * c;
- uword * p;
+ dhcp_client_main_t *dcm = &dhcp_client_main;
+ vlib_main_t *vm = dcm->vlib_main;
+ dhcp_client_t *c;
+ uword *p;
f64 now = vlib_time_now (dcm->vlib_main);
u8 dhcp_message_type = 0;
- dhcp_option_t * o;
+ dhcp_option_t *o;
- /*
- * Doing dhcp client on this interface?
+ /*
+ * Doing dhcp client on this interface?
* Presumably we will always receive dhcp clnt for-us pkts on
* the interface that's asking for an address.
*/
- p = hash_get (dcm->client_by_sw_if_index,
- vnet_buffer(b)->sw_if_index [VLIB_RX]);
+ p = hash_get (dcm->client_by_sw_if_index,
+ vnet_buffer (b)->sw_if_index[VLIB_RX]);
if (p == 0)
- return 0; /* no */
-
+ return 0; /* no */
+
c = pool_elt_at_index (dcm->clients, p[0]);
/* Mixing dhcp relay and dhcp proxy? DGMS... */
@@ -174,66 +159,65 @@ int dhcp_client_for_us (u32 bi, vlib_buffer_t * b,
c->dhcp_server.as_u32 = dhcp->server_ip_address.as_u32;
o = (dhcp_option_t *) dhcp->options;
-
- while (o->option != 0xFF /* end of options */ &&
- (u8 *) o < (b->data + b->current_data + b->current_length))
+
+ while (o->option != 0xFF /* end of options */ &&
+ (u8 *) o < (b->data + b->current_data + b->current_length))
{
switch (o->option)
- {
- case 53: /* dhcp message type */
- dhcp_message_type = o->data[0];
- break;
-
- case 51: /* lease time */
- {
- u32 lease_time_in_seconds =
- clib_host_to_net_u32 (o->data_as_u32[0]);
- c->lease_expires = now + (f64) lease_time_in_seconds;
- c->lease_lifetime = lease_time_in_seconds;
- /* Set a sensible default, in case we don't get opt 58 */
- c->lease_renewal_interval = lease_time_in_seconds / 2;
- }
- break;
-
- case 58: /* lease renew time in seconds */
- {
- u32 lease_renew_time_in_seconds =
- clib_host_to_net_u32 (o->data_as_u32[0]);
- c->lease_renewal_interval = lease_renew_time_in_seconds;
- }
- break;
-
- case 54: /* dhcp server address */
- c->dhcp_server.as_u32 = o->data_as_u32[0];
- break;
-
- case 1: /* subnet mask */
- {
- u32 subnet_mask =
- clib_host_to_net_u32 (o->data_as_u32[0]);
- c->subnet_mask_width = count_set_bits (subnet_mask);
- }
- break;
- case 3: /* router address */
- {
- u32 router_address = o->data_as_u32[0];
- c->router_address.as_u32 = router_address;
- }
- break;
-
- case 12: /* hostname */
- {
- /* Replace the existing hostname if necessary */
- vec_free (c->hostname);
- vec_validate (c->hostname, o->length - 1);
- clib_memcpy (c->hostname, o->data, o->length);
- }
- break;
-
- /* $$$$ Your message in this space, parse more options */
- default:
- break;
- }
+ {
+ case 53: /* dhcp message type */
+ dhcp_message_type = o->data[0];
+ break;
+
+ case 51: /* lease time */
+ {
+ u32 lease_time_in_seconds =
+ clib_host_to_net_u32 (o->data_as_u32[0]);
+ c->lease_expires = now + (f64) lease_time_in_seconds;
+ c->lease_lifetime = lease_time_in_seconds;
+ /* Set a sensible default, in case we don't get opt 58 */
+ c->lease_renewal_interval = lease_time_in_seconds / 2;
+ }
+ break;
+
+ case 58: /* lease renew time in seconds */
+ {
+ u32 lease_renew_time_in_seconds =
+ clib_host_to_net_u32 (o->data_as_u32[0]);
+ c->lease_renewal_interval = lease_renew_time_in_seconds;
+ }
+ break;
+
+ case 54: /* dhcp server address */
+ c->dhcp_server.as_u32 = o->data_as_u32[0];
+ break;
+
+ case 1: /* subnet mask */
+ {
+ u32 subnet_mask = clib_host_to_net_u32 (o->data_as_u32[0]);
+ c->subnet_mask_width = count_set_bits (subnet_mask);
+ }
+ break;
+ case 3: /* router address */
+ {
+ u32 router_address = o->data_as_u32[0];
+ c->router_address.as_u32 = router_address;
+ }
+ break;
+
+ case 12: /* hostname */
+ {
+ /* Replace the existing hostname if necessary */
+ vec_free (c->hostname);
+ vec_validate (c->hostname, o->length - 1);
+ clib_memcpy (c->hostname, o->data, o->length);
+ }
+ break;
+
+ /* $$$$ Your message in this space, parse more options */
+ default:
+ break;
+ }
o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
}
@@ -242,13 +226,13 @@ int dhcp_client_for_us (u32 bi, vlib_buffer_t * b,
{
case DHCP_DISCOVER:
if (dhcp_message_type != DHCP_PACKET_OFFER)
- {
- clib_warning ("sw_if_index %d state %U message type %d",
- c->sw_if_index, format_dhcp_client_state,
- c->state, dhcp_message_type);
- c->next_transmit = now + 5.0;
- break;
- }
+ {
+ clib_warning ("sw_if_index %d state %U message type %d",
+ c->sw_if_index, format_dhcp_client_state,
+ c->state, dhcp_message_type);
+ c->next_transmit = now + 5.0;
+ break;
+ }
/*
* in order to accept unicasted ACKs we need to configure the offered
* address on the interface. However, at this point we may not know the
@@ -260,76 +244,61 @@ int dhcp_client_for_us (u32 bi, vlib_buffer_t * b,
/* Received an offer, go send a request */
c->state = DHCP_REQUEST;
c->retry_count = 0;
- c->next_transmit = 0; /* send right now... */
+ c->next_transmit = 0; /* send right now... */
/* Poke the client process, which will send the request */
- uword client_id = c - dcm->clients;
+ uword client_id = c - dcm->clients;
vl_api_rpc_call_main_thread (dhcp_client_proc_callback,
- (u8 *) &client_id, sizeof (uword));
+ (u8 *) & client_id, sizeof (uword));
break;
case DHCP_BOUND:
case DHCP_REQUEST:
if (dhcp_message_type != DHCP_PACKET_ACK)
- {
- clib_warning ("sw_if_index %d state %U message type %d",
- c->sw_if_index, format_dhcp_client_state,
- c->state, dhcp_message_type);
- c->next_transmit = now + 5.0;
- break;
- }
+ {
+ clib_warning ("sw_if_index %d state %U message type %d",
+ c->sw_if_index, format_dhcp_client_state,
+ c->state, dhcp_message_type);
+ c->next_transmit = now + 5.0;
+ break;
+ }
/* OK, we own the address (etc), add to the routing table(s) */
if (c->state == DHCP_REQUEST)
- {
- void (*fp)(u32, u32, u8 *, u8, u8, u8 *, u8 *, u8 *) = c->event_callback;
-
- /* replace the temporary RX address with the correct subnet */
- dhcp_client_remove_rx_address (dcm, c);
- dhcp_client_acquire_address (dcm, c);
-
- /*
- * Configure default IP route:
- */
- if (c->router_address.as_u32)
+ {
+ void (*fp) (u32, u32, u8 *, u8, u8, u8 *, u8 *, u8 *) =
+ c->event_callback;
+
+ /* replace the temporary RX address with the correct subnet */
+ dhcp_client_remove_rx_address (dcm, c);
+ dhcp_client_acquire_address (dcm, c);
+
+ /*
+ * Configure default IP route:
+ */
+ if (c->router_address.as_u32)
{
- fib_prefix_t all_0s =
- {
- .fp_len = 0,
- .fp_addr.ip4.as_u32 = 0x0,
- .fp_proto = FIB_PROTOCOL_IP4,
+ fib_prefix_t all_0s = {
+ .fp_len = 0,
+ .fp_addr.ip4.as_u32 = 0x0,
+ .fp_proto = FIB_PROTOCOL_IP4,
};
- ip46_address_t nh =
- {
- .ip4 = c->router_address,
+ ip46_address_t nh = {
+ .ip4 = c->router_address,
};
- fib_table_entry_path_add (fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &all_0s,
- FIB_SOURCE_DHCP,
- FIB_ENTRY_FLAG_NONE,
- DPO_PROTO_IP4,
- &nh,
- c->sw_if_index,
- ~0,
- 1,
- NULL, // no label stack
+ fib_table_entry_path_add (fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, c->sw_if_index), &all_0s, FIB_SOURCE_DHCP, FIB_ENTRY_FLAG_NONE, DPO_PROTO_IP4, &nh, c->sw_if_index, ~0, 1, NULL, // no label stack
FIB_ROUTE_PATH_FLAG_NONE);
}
- /*
- * Call the user's event callback to report DHCP information
- */
- if (fp)
- (*fp) (c->client_index, /* clinet index */
- c->pid,
- c->hostname,
- c->subnet_mask_width,
- 0, /* is_ipv6 */
- (u8 *)&c->leased_address, /* host IP address */
- (u8 *)&c->router_address, /* router IP address */
- (u8 *)(c->l2_rewrite + 6));/* host MAC address */
- }
+ /*
+ * Call the user's event callback to report DHCP information
+ */
+ if (fp)
+ (*fp) (c->client_index, /* clinet index */
+ c->pid, c->hostname, c->subnet_mask_width, 0, /* is_ipv6 */
+ (u8 *) & c->leased_address, /* host IP address */
+ (u8 *) & c->router_address, /* router IP address */
+ (u8 *) (c->l2_rewrite + 6)); /* host MAC address */
+ }
c->state = DHCP_BOUND;
c->retry_count = 0;
@@ -338,8 +307,7 @@ int dhcp_client_for_us (u32 bi, vlib_buffer_t * b,
break;
default:
- clib_warning ("client %d bogus state %d",
- c - dcm->clients, c->state);
+ clib_warning ("client %d bogus state %d", c - dcm->clients, c->state);
break;
}
@@ -348,24 +316,24 @@ int dhcp_client_for_us (u32 bi, vlib_buffer_t * b,
return 1;
}
-static void
-send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
- dhcp_packet_type_t type, int is_broadcast)
+static void
+send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
+ dhcp_packet_type_t type, int is_broadcast)
{
- vlib_main_t * vm = dcm->vlib_main;
- vnet_main_t * vnm = dcm->vnet_main;
- vnet_hw_interface_t * hw = vnet_get_sup_hw_interface (vnm, c->sw_if_index);
- vnet_sw_interface_t * sup_sw
+ vlib_main_t *vm = dcm->vlib_main;
+ vnet_main_t *vnm = dcm->vnet_main;
+ vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, c->sw_if_index);
+ vnet_sw_interface_t *sup_sw
= vnet_get_sup_sw_interface (vnm, c->sw_if_index);
- vnet_sw_interface_t * sw = vnet_get_sw_interface (vnm, c->sw_if_index);
- vlib_buffer_t * b;
+ vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, c->sw_if_index);
+ vlib_buffer_t *b;
u32 bi;
- ip4_header_t * ip;
- udp_header_t * udp;
- dhcp_header_t * dhcp;
- u32 * to_next;
- vlib_frame_t * f;
- dhcp_option_t * o;
+ ip4_header_t *ip;
+ udp_header_t *udp;
+ dhcp_header_t *dhcp;
+ u32 *to_next;
+ vlib_frame_t *f;
+ dhcp_option_t *o;
u16 udp_length, ip_length;
/* Interface(s) down? */
@@ -376,30 +344,31 @@ send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
if ((sw->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) == 0)
return;
- if (vlib_buffer_alloc (vm, &bi, 1) != 1) {
- clib_warning ("buffer allocation failure");
- c->next_transmit = 0;
- return;
- }
-
+ if (vlib_buffer_alloc (vm, &bi, 1) != 1)
+ {
+ clib_warning ("buffer allocation failure");
+ c->next_transmit = 0;
+ return;
+ }
+
/* Build a dhcpv4 pkt from whole cloth */
b = vlib_get_buffer (vm, bi);
ASSERT (b->current_data == 0);
- vnet_buffer(b)->sw_if_index[VLIB_RX] = c->sw_if_index;
- if (is_broadcast)
+ vnet_buffer (b)->sw_if_index[VLIB_RX] = c->sw_if_index;
+ if (is_broadcast)
{
f = vlib_get_frame_to_node (vm, hw->output_node_index);
- vnet_buffer(b)->sw_if_index[VLIB_TX] = c->sw_if_index;
- clib_memcpy (b->data, c->l2_rewrite, vec_len(c->l2_rewrite));
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = c->sw_if_index;
+ clib_memcpy (b->data, c->l2_rewrite, vec_len (c->l2_rewrite));
ip = (void *)
- (((u8 *)vlib_buffer_get_current (b)) + vec_len (c->l2_rewrite));
+ (((u8 *) vlib_buffer_get_current (b)) + vec_len (c->l2_rewrite));
}
else
{
f = vlib_get_frame_to_node (vm, ip4_lookup_node.index);
- vnet_buffer(b)->sw_if_index[VLIB_TX] = ~0; /* use interface VRF */
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = ~0; /* use interface VRF */
ip = vlib_buffer_get_current (b);
}
@@ -412,9 +381,9 @@ send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
vlib_put_frame_to_node (vm, hw->output_node_index, f);
else
vlib_put_frame_to_node (vm, ip4_lookup_node.index, f);
-
- udp = (udp_header_t *)(ip+1);
- dhcp = (dhcp_header_t *)(udp+1);
+
+ udp = (udp_header_t *) (ip + 1);
+ dhcp = (dhcp_header_t *) (udp + 1);
/* $$$ optimize, maybe */
memset (ip, 0, sizeof (*ip) + sizeof (*udp) + sizeof (*dhcp));
@@ -422,7 +391,7 @@ send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
ip->ip_version_and_header_length = 0x45;
ip->ttl = 128;
ip->protocol = IP_PROTOCOL_UDP;
-
+
if (is_broadcast)
{
/* src = 0.0.0.0, dst = 255.255.255.255 */
@@ -445,14 +414,14 @@ send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
if (is_broadcast == 0)
dhcp->client_ip_address.as_u32 = c->leased_address.as_u32;
- dhcp->opcode = 1; /* request, all we send */
- dhcp->hardware_type = 1; /* ethernet */
- dhcp->hardware_address_length = 6;
- dhcp->transaction_identifier = c->transaction_id;
- dhcp->flags = clib_host_to_net_u16(is_broadcast ? DHCP_FLAG_BROADCAST : 0);
+ dhcp->opcode = 1; /* request, all we send */
+ dhcp->hardware_type = 1; /* ethernet */
+ dhcp->hardware_address_length = 6;
+ dhcp->transaction_identifier = c->transaction_id;
+ dhcp->flags = clib_host_to_net_u16 (is_broadcast ? DHCP_FLAG_BROADCAST : 0);
dhcp->magic_cookie.as_u32 = DHCP_MAGIC;
-
- o = (dhcp_option_t * )dhcp->options;
+
+ o = (dhcp_option_t *) dhcp->options;
/* Send option 53, the DHCP message type */
o->option = DHCP_PACKET_OPTION_MSG_TYPE;
@@ -461,14 +430,14 @@ send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
/* Send option 57, max msg length */
- if (0 /* not needed, apparently */)
+ if (0 /* not needed, apparently */ )
{
o->option = 57;
o->length = 2;
{
- u16 *o2 = (u16 *) o->data;
- *o2 = clib_host_to_net_u16 (1152);
- o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
+ u16 *o2 = (u16 *) o->data;
+ *o2 = clib_host_to_net_u16 (1152);
+ o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
}
}
@@ -508,13 +477,13 @@ send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
o->option = 61;
o->length = vec_len (c->client_identifier);
clib_memcpy (o->data, c->client_identifier,
- vec_len (c->client_identifier));
+ vec_len (c->client_identifier));
o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
}
/* $$ maybe send the client s/w version if anyone cares */
- /*
+ /*
* send option 55, parameter request list
* The current list - see below, matches the Linux dhcp client's list
* Any specific dhcp server config and/or dhcp server may or may
@@ -522,36 +491,36 @@ send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
*/
o->option = 55;
o->length = vec_len (c->option_55_data);
- clib_memcpy (o->data, c->option_55_data, vec_len(c->option_55_data));
+ clib_memcpy (o->data, c->option_55_data, vec_len (c->option_55_data));
o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
/* End of list */
o->option = 0xff;
o->length = 0;
o++;
-
- b->current_length = ((u8 *)o) - b->data;
+
+ b->current_length = ((u8 *) o) - b->data;
/* fix ip length, checksum and udp length */
ip_length = vlib_buffer_length_in_chain (vm, b);
if (is_broadcast)
- ip_length -= vec_len (c->l2_rewrite);
+ ip_length -= vec_len (c->l2_rewrite);
- ip->length = clib_host_to_net_u16(ip_length);
- ip->checksum = ip4_header_checksum(ip);
+ ip->length = clib_host_to_net_u16 (ip_length);
+ ip->checksum = ip4_header_checksum (ip);
udp_length = ip_length - (sizeof (*ip));
udp->length = clib_host_to_net_u16 (udp_length);
}
-static int
+static int
dhcp_discover_state (dhcp_client_main_t * dcm, dhcp_client_t * c, f64 now)
{
/*
* State machine "DISCOVER" state. Send a dhcp discover packet,
* eventually back off the retry rate.
*/
- send_dhcp_pkt (dcm, c, DHCP_PACKET_DISCOVER, 1 /* is_broadcast */);
+ send_dhcp_pkt (dcm, c, DHCP_PACKET_DISCOVER, 1 /* is_broadcast */ );
c->retry_count++;
if (c->retry_count > 10)
@@ -560,18 +529,18 @@ dhcp_discover_state (dhcp_client_main_t * dcm, dhcp_client_t * c, f64 now)
c->next_transmit = now + 1.0;
return 0;
}
-
-static int
+
+static int
dhcp_request_state (dhcp_client_main_t * dcm, dhcp_client_t * c, f64 now)
-{
+{
/*
* State machine "REQUEST" state. Send a dhcp request packet,
* eventually drop back to the discover state.
*/
- send_dhcp_pkt (dcm, c, DHCP_PACKET_REQUEST, 1 /* is_broadcast */);
+ send_dhcp_pkt (dcm, c, DHCP_PACKET_REQUEST, 1 /* is_broadcast */ );
c->retry_count++;
- if (c->retry_count > 7 /* lucky you */)
+ if (c->retry_count > 7 /* lucky you */ )
{
c->state = DHCP_DISCOVER;
c->next_transmit = now;
@@ -582,7 +551,7 @@ dhcp_request_state (dhcp_client_main_t * dcm, dhcp_client_t * c, f64 now)
return 0;
}
-static int
+static int
dhcp_bound_state (dhcp_client_main_t * dcm, dhcp_client_t * c, f64 now)
{
/*
@@ -590,39 +559,32 @@ dhcp_bound_state (dhcp_client_main_t * dcm, dhcp_client_t * c, f64 now)
* eventually, when the lease expires, forget the dhcp data
* and go back to the stone age.
*/
- send_dhcp_pkt (dcm, c, DHCP_PACKET_REQUEST, 0 /* is_broadcast */);
-
+ send_dhcp_pkt (dcm, c, DHCP_PACKET_REQUEST, 0 /* is_broadcast */ );
+
c->retry_count++;
if (c->retry_count > 10)
c->next_transmit = now + 5.0;
else
c->next_transmit = now + 1.0;
-
+
if (now > c->lease_expires)
{
if (c->router_address.as_u32)
- {
- fib_prefix_t all_0s =
- {
- .fp_len = 0,
- .fp_addr.ip4.as_u32 = 0x0,
- .fp_proto = FIB_PROTOCOL_IP4,
+ {
+ fib_prefix_t all_0s = {
+ .fp_len = 0,
+ .fp_addr.ip4.as_u32 = 0x0,
+ .fp_proto = FIB_PROTOCOL_IP4,
};
ip46_address_t nh = {
- .ip4 = c->router_address,
+ .ip4 = c->router_address,
};
- fib_table_entry_path_remove(fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &all_0s,
- FIB_SOURCE_DHCP,
- DPO_PROTO_IP4,
- &nh,
- c->sw_if_index,
- ~0,
- 1,
- FIB_ROUTE_PATH_FLAG_NONE);
+ fib_table_entry_path_remove (fib_table_get_index_for_sw_if_index
+ (FIB_PROTOCOL_IP4, c->sw_if_index),
+ &all_0s, FIB_SOURCE_DHCP,
+ DPO_PROTO_IP4, &nh, c->sw_if_index, ~0,
+ 1, FIB_ROUTE_PATH_FLAG_NONE);
}
dhcp_client_release_address (dcm, c);
@@ -640,10 +602,11 @@ dhcp_bound_state (dhcp_client_main_t * dcm, dhcp_client_t * c, f64 now)
return 0;
}
-static f64 dhcp_client_sm (f64 now, f64 timeout, uword pool_index)
+static f64
+dhcp_client_sm (f64 now, f64 timeout, uword pool_index)
{
- dhcp_client_main_t * dcm = &dhcp_client_main;
- dhcp_client_t * c;
+ dhcp_client_main_t *dcm = &dhcp_client_main;
+ dhcp_client_t *c;
/* deleted, pooched, yadda yadda yadda */
if (pool_is_free_index (dcm->clients, pool_index))
@@ -655,30 +618,30 @@ static f64 dhcp_client_sm (f64 now, f64 timeout, uword pool_index)
if (now < c->next_transmit)
return timeout;
- again:
+again:
switch (c->state)
{
- case DHCP_DISCOVER: /* send a discover */
+ case DHCP_DISCOVER: /* send a discover */
if (dhcp_discover_state (dcm, c, now))
- goto again;
+ goto again;
break;
- case DHCP_REQUEST: /* send a request */
+ case DHCP_REQUEST: /* send a request */
if (dhcp_request_state (dcm, c, now))
- goto again;
+ goto again;
break;
-
- case DHCP_BOUND: /* bound, renew needed? */
+
+ case DHCP_BOUND: /* bound, renew needed? */
if (dhcp_bound_state (dcm, c, now))
- goto again;
+ goto again;
break;
-
+
default:
- clib_warning ("dhcp client %d bogus state %d",
- c - dcm->clients, c->state);
+ clib_warning ("dhcp client %d bogus state %d",
+ c - dcm->clients, c->state);
break;
}
-
+
if (c->next_transmit < now + timeout)
return c->next_transmit - now;
@@ -687,15 +650,14 @@ static f64 dhcp_client_sm (f64 now, f64 timeout, uword pool_index)
static uword
dhcp_client_process (vlib_main_t * vm,
- vlib_node_runtime_t * rt,
- vlib_frame_t * f)
+ vlib_node_runtime_t * rt, vlib_frame_t * f)
{
f64 timeout = 100.0;
f64 now;
uword event_type;
- uword * event_data = 0;
- dhcp_client_main_t * dcm = &dhcp_client_main;
- dhcp_client_t * c;
+ uword *event_data = 0;
+ dhcp_client_main_t *dcm = &dhcp_client_main;
+ dhcp_client_t *c;
int i;
while (1)
@@ -707,22 +669,25 @@ dhcp_client_process (vlib_main_t * vm,
now = vlib_time_now (vm);
switch (event_type)
- {
- case EVENT_DHCP_CLIENT_WAKEUP:
- for (i = 0; i < vec_len (event_data); i++)
- timeout = dhcp_client_sm (now, timeout, event_data[i]);
- break;
-
- case ~0:
- pool_foreach (c, dcm->clients,
- ({
- timeout = dhcp_client_sm (now, timeout,
- (uword)(c - dcm->clients));
- }));
- if (pool_elts (dcm->clients) == 0)
- timeout = 100.0;
- break;
- }
+ {
+ case EVENT_DHCP_CLIENT_WAKEUP:
+ for (i = 0; i < vec_len (event_data); i++)
+ timeout = dhcp_client_sm (now, timeout, event_data[i]);
+ break;
+
+ case ~0:
+ pool_foreach (c, dcm->clients, (
+ {
+ timeout =
+ dhcp_client_sm (now, timeout,
+ (uword) (c -
+ dcm->clients));
+ }
+ ));
+ if (pool_elts (dcm->clients) == 0)
+ timeout = 100.0;
+ break;
+ }
vec_reset_length (event_data);
}
@@ -731,17 +696,20 @@ dhcp_client_process (vlib_main_t * vm,
return 0;
}
+/* *INDENT-OFF* */
VLIB_REGISTER_NODE (dhcp_client_process_node,static) = {
.function = dhcp_client_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "dhcp-client-process",
.process_log2_n_stack_bytes = 16,
};
+/* *INDENT-ON* */
-static u8 * format_dhcp_client_state (u8 * s, va_list * va)
+static u8 *
+format_dhcp_client_state (u8 * s, va_list * va)
{
dhcp_client_state_t state = va_arg (*va, dhcp_client_state_t);
- char * str = "BOGUS!";
+ char *str = "BOGUS!";
switch (state)
{
@@ -759,96 +727,100 @@ static u8 * format_dhcp_client_state (u8 * s, va_list * va)
return s;
}
-static u8 * format_dhcp_client (u8 * s, va_list * va)
+static u8 *
+format_dhcp_client (u8 * s, va_list * va)
{
- dhcp_client_main_t * dcm = va_arg (*va, dhcp_client_main_t *);
- dhcp_client_t * c = va_arg (*va, dhcp_client_t *);
+ dhcp_client_main_t *dcm = va_arg (*va, dhcp_client_main_t *);
+ dhcp_client_t *c = va_arg (*va, dhcp_client_t *);
int verbose = va_arg (*va, int);
- s = format (s, "[%d] %U state %U ", c - dcm->clients,
- format_vnet_sw_if_index_name, dcm->vnet_main, c->sw_if_index,
- format_dhcp_client_state, c->state);
+ s = format (s, "[%d] %U state %U ", c - dcm->clients,
+ format_vnet_sw_if_index_name, dcm->vnet_main, c->sw_if_index,
+ format_dhcp_client_state, c->state);
if (c->leased_address.as_u32)
s = format (s, "addr %U/%d gw %U\n",
- format_ip4_address, &c->leased_address,
- c->subnet_mask_width, format_ip4_address, &c->router_address);
+ format_ip4_address, &c->leased_address,
+ c->subnet_mask_width, format_ip4_address, &c->router_address);
else
s = format (s, "no address\n");
if (verbose)
{
s = format (s, "retry count %d, next xmt %.2f",
- c->retry_count, c->next_transmit);
+ c->retry_count, c->next_transmit);
}
return s;
}
static clib_error_t *
show_dhcp_client_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
- dhcp_client_main_t * dcm = &dhcp_client_main;
- dhcp_client_t * c;
+ dhcp_client_main_t *dcm = &dhcp_client_main;
+ dhcp_client_t *c;
int verbose = 0;
u32 sw_if_index = ~0;
- uword * p;
+ uword *p;
- while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (input, "intfc %U",
- unformat_vnet_sw_interface, dcm->vnet_main,
- &sw_if_index))
- ;
+ if (unformat (input, "intfc %U",
+ unformat_vnet_sw_interface, dcm->vnet_main, &sw_if_index))
+ ;
else if (unformat (input, "verbose"))
- verbose = 1;
+ verbose = 1;
else
- break;
+ break;
}
if (sw_if_index != ~0)
{
p = hash_get (dcm->client_by_sw_if_index, sw_if_index);
if (p == 0)
- return clib_error_return (0, "dhcp client not configured");
+ return clib_error_return (0, "dhcp client not configured");
c = pool_elt_at_index (dcm->clients, p[0]);
vlib_cli_output (vm, "%U", format_dhcp_client, dcm, c, verbose);
return 0;
}
- pool_foreach (c, dcm->clients,
- ({
- vlib_cli_output (vm, "%U", format_dhcp_client, dcm, c, verbose);
- }));
-
+ pool_foreach (c, dcm->clients, (
+ {
+ vlib_cli_output (vm, "%U",
+ format_dhcp_client, dcm,
+ c, verbose);
+ }
+ ));
+
return 0;
}
+/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_dhcp_client_command, static) = {
.path = "show dhcp client",
.short_help = "show dhcp client [intfc <intfc>][verbose]",
.function = show_dhcp_client_command_fn,
};
+/* *INDENT-ON* */
-int dhcp_client_add_del (dhcp_client_add_del_args_t * a)
+int
+dhcp_client_add_del (dhcp_client_add_del_args_t * a)
{
- dhcp_client_main_t * dcm = &dhcp_client_main;
- vlib_main_t * vm = dcm->vlib_main;
- dhcp_client_t * c;
- uword * p;
- fib_prefix_t all_1s =
- {
- .fp_len = 32,
- .fp_addr.ip4.as_u32 = 0xffffffff,
- .fp_proto = FIB_PROTOCOL_IP4,
+ dhcp_client_main_t *dcm = &dhcp_client_main;
+ vlib_main_t *vm = dcm->vlib_main;
+ dhcp_client_t *c;
+ uword *p;
+ fib_prefix_t all_1s = {
+ .fp_len = 32,
+ .fp_addr.ip4.as_u32 = 0xffffffff,
+ .fp_proto = FIB_PROTOCOL_IP4,
};
- fib_prefix_t all_0s =
- {
- .fp_len = 0,
- .fp_addr.ip4.as_u32 = 0x0,
- .fp_proto = FIB_PROTOCOL_IP4,
+ fib_prefix_t all_0s = {
+ .fp_len = 0,
+ .fp_addr.ip4.as_u32 = 0x0,
+ .fp_proto = FIB_PROTOCOL_IP4,
};
p = hash_get (dcm->client_by_sw_if_index, a->sw_if_index);
@@ -868,57 +840,49 @@ int dhcp_client_add_del (dhcp_client_add_del_args_t * a)
c->option_55_data = a->option_55_data;
c->hostname = a->hostname;
c->client_identifier = a->client_identifier;
- do {
- c->transaction_id = random_u32 (&dcm->seed);
- } while (c->transaction_id == 0);
+ do
+ {
+ c->transaction_id = random_u32 (&dcm->seed);
+ }
+ while (c->transaction_id == 0);
set_l2_rewrite (dcm, c);
hash_set (dcm->client_by_sw_if_index, a->sw_if_index, c - dcm->clients);
/* this add is ref counted by FIB so we can add for each itf */
- fib_table_entry_special_add(fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &all_1s,
- FIB_SOURCE_DHCP,
- FIB_ENTRY_FLAG_LOCAL);
-
- /*
+ fib_table_entry_special_add (fib_table_get_index_for_sw_if_index
+ (FIB_PROTOCOL_IP4, c->sw_if_index),
+ &all_1s, FIB_SOURCE_DHCP,
+ FIB_ENTRY_FLAG_LOCAL);
+
+ /*
* enable the interface to RX IPv4 packets
* this is also ref counted
*/
ip4_sw_interface_enable_disable (c->sw_if_index, 1);
- vlib_process_signal_event (vm, dhcp_client_process_node.index,
- EVENT_DHCP_CLIENT_WAKEUP, c - dcm->clients);
+ vlib_process_signal_event (vm, dhcp_client_process_node.index,
+ EVENT_DHCP_CLIENT_WAKEUP, c - dcm->clients);
}
else
{
c = pool_elt_at_index (dcm->clients, p[0]);
- fib_table_entry_special_remove(fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &all_1s,
- FIB_SOURCE_DHCP);
+ fib_table_entry_special_remove (fib_table_get_index_for_sw_if_index
+ (FIB_PROTOCOL_IP4, c->sw_if_index),
+ &all_1s, FIB_SOURCE_DHCP);
if (c->router_address.as_u32)
- {
+ {
ip46_address_t nh = {
- .ip4 = c->router_address,
+ .ip4 = c->router_address,
};
- fib_table_entry_path_remove(fib_table_get_index_for_sw_if_index(
- FIB_PROTOCOL_IP4,
- c->sw_if_index),
- &all_0s,
- FIB_SOURCE_DHCP,
- DPO_PROTO_IP4,
- &nh,
- c->sw_if_index,
- ~0,
- 1,
- FIB_ROUTE_PATH_FLAG_NONE);
- }
+ fib_table_entry_path_remove (fib_table_get_index_for_sw_if_index
+ (FIB_PROTOCOL_IP4, c->sw_if_index),
+ &all_0s, FIB_SOURCE_DHCP,
+ DPO_PROTO_IP4, &nh, c->sw_if_index, ~0,
+ 1, FIB_ROUTE_PATH_FLAG_NONE);
+ }
dhcp_client_remove_rx_address (dcm, c);
dhcp_client_release_address (dcm, c);
ip4_sw_interface_enable_disable (c->sw_if_index, 0);
@@ -935,13 +899,11 @@ int dhcp_client_add_del (dhcp_client_add_del_args_t * a)
int
dhcp_client_config (vlib_main_t * vm,
- u32 sw_if_index,
- u8 * hostname,
- u8 * client_id,
- u32 is_add,
- u32 client_index,
- void * event_callback,
- u32 pid)
+ u32 sw_if_index,
+ u8 * hostname,
+ u8 * client_id,
+ u32 is_add,
+ u32 client_index, void *event_callback, u32 pid)
{
dhcp_client_add_del_args_t _a, *a = &_a;
int rv;
@@ -952,12 +914,13 @@ dhcp_client_config (vlib_main_t * vm,
a->client_index = client_index;
a->pid = pid;
a->event_callback = event_callback;
- vec_validate(a->hostname, strlen((char *)hostname) - 1);
- strncpy((char *)a->hostname, (char *)hostname, vec_len(a->hostname));
- vec_validate(a->client_identifier, strlen((char *)client_id) - 1);
- strncpy((char *)a->client_identifier, (char *)client_id, vec_len(a->client_identifier));
+ vec_validate (a->hostname, strlen ((char *) hostname) - 1);
+ strncpy ((char *) a->hostname, (char *) hostname, vec_len (a->hostname));
+ vec_validate (a->client_identifier, strlen ((char *) client_id) - 1);
+ strncpy ((char *) a->client_identifier, (char *) client_id,
+ vec_len (a->client_identifier));
- /*
+ /*
* Option 55 request list. These data precisely match
* the Ubuntu dhcp client. YMMV.
*/
@@ -1003,11 +966,11 @@ dhcp_client_config (vlib_main_t * vm,
vec_free (a->option_55_data);
if (is_add)
- clib_warning ("dhcp client already enabled on intf_idx %d",
- sw_if_index);
+ clib_warning ("dhcp client already enabled on intf_idx %d",
+ sw_if_index);
else
- clib_warning ("dhcp client not enabled on on intf_idx %d",
- sw_if_index);
+ clib_warning ("dhcp client not enabled on on intf_idx %d",
+ sw_if_index);
break;
default:
@@ -1019,30 +982,29 @@ dhcp_client_config (vlib_main_t * vm,
static clib_error_t *
dhcp_client_set_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
- dhcp_client_main_t * dcm = &dhcp_client_main;
+ dhcp_client_main_t *dcm = &dhcp_client_main;
u32 sw_if_index;
- u8 * hostname = 0;
+ u8 *hostname = 0;
u8 sw_if_index_set = 0;
int is_add = 1;
dhcp_client_add_del_args_t _a, *a = &_a;
int rv;
- while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (input, "intfc %U",
- unformat_vnet_sw_interface, dcm->vnet_main,
- &sw_if_index))
- sw_if_index_set = 1;
+ if (unformat (input, "intfc %U",
+ unformat_vnet_sw_interface, dcm->vnet_main, &sw_if_index))
+ sw_if_index_set = 1;
else if (unformat (input, "hostname %v", &hostname))
- ;
+ ;
else if (unformat (input, "del"))
- is_add = 0;
+ is_add = 0;
else
- break;
+ break;
}
if (sw_if_index_set == 0)
@@ -1054,7 +1016,7 @@ dhcp_client_set_command_fn (vlib_main_t * vm,
a->hostname = hostname;
a->client_identifier = format (0, "vpe 1.0%c", 0);
- /*
+ /*
* Option 55 request list. These data precisely match
* the Ubuntu dhcp client. YMMV.
*/
@@ -1099,13 +1061,13 @@ dhcp_client_set_command_fn (vlib_main_t * vm,
vec_free (a->client_identifier);
vec_free (a->option_55_data);
if (is_add)
- return clib_error_return (0, "dhcp client already enabled on %U",
- format_vnet_sw_if_index_name,
- dcm->vnet_main, sw_if_index);
+ return clib_error_return (0, "dhcp client already enabled on %U",
+ format_vnet_sw_if_index_name,
+ dcm->vnet_main, sw_if_index);
else
- return clib_error_return (0, "dhcp client not enabled on %U",
- format_vnet_sw_if_index_name,
- dcm->vnet_main, sw_if_index);
+ return clib_error_return (0, "dhcp client not enabled on %U",
+ format_vnet_sw_if_index_name,
+ dcm->vnet_main, sw_if_index);
break;
default:
@@ -1115,21 +1077,31 @@ dhcp_client_set_command_fn (vlib_main_t * vm,
return 0;
}
+/* *INDENT-OFF* */
VLIB_CLI_COMMAND (dhcp_client_set_command, static) = {
.path = "set dhcp client",
.short_help = "set dhcp client [del] intfc <interface> [hostname <name>]",
.function = dhcp_client_set_command_fn,
};
+/* *INDENT-ON* */
static clib_error_t *
dhcp_client_init (vlib_main_t * vm)
{
- dhcp_client_main_t * dcm = &dhcp_client_main;
+ dhcp_client_main_t *dcm = &dhcp_client_main;
dcm->vlib_main = vm;
- dcm->vnet_main = vnet_get_main();
+ dcm->vnet_main = vnet_get_main ();
dcm->seed = 0xdeaddabe;
return 0;
}
VLIB_INIT_FUNCTION (dhcp_client_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */