diff options
Diffstat (limited to 'src/vnet/gre/gre.c')
| -rw-r--r-- | src/vnet/gre/gre.c | 290 |
1 files changed, 156 insertions, 134 deletions
diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c index 99421855bed..785476d0905 100644 --- a/src/vnet/gre/gre.c +++ b/src/vnet/gre/gre.c @@ -21,15 +21,19 @@ gre_main_t gre_main; -typedef struct { - union { +typedef struct +{ + union + { ip4_and_gre_header_t ip4_and_gre; u64 as_u64[3]; }; } ip4_and_gre_union_t; -typedef struct { - union { +typedef struct +{ + union + { ip6_and_gre_header_t ip6_and_gre; u64 as_u64[3]; }; @@ -37,7 +41,8 @@ typedef struct { /* Packet trace structure */ -typedef struct { +typedef struct +{ /* Tunnel-id / index in tunnel vector */ u32 tunnel_id; @@ -49,11 +54,12 @@ typedef struct { ip46_address_t dst; } gre_tx_trace_t; -u8 * format_gre_tx_trace (u8 * s, va_list * args) +u8 * +format_gre_tx_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - gre_tx_trace_t * t = va_arg (*args, gre_tx_trace_t *); + gre_tx_trace_t *t = va_arg (*args, gre_tx_trace_t *); s = format (s, "GRE: tunnel %d len %d src %U dst %U", t->tunnel_id, clib_net_to_host_u16 (t->length), @@ -62,11 +68,12 @@ u8 * format_gre_tx_trace (u8 * s, va_list * args) return s; } -u8 * format_gre_protocol (u8 * s, va_list * args) +u8 * +format_gre_protocol (u8 * s, va_list * args) { gre_protocol_t p = va_arg (*args, u32); - gre_main_t * gm = &gre_main; - gre_protocol_info_t * pi = gre_get_protocol_info (gm, p); + gre_main_t *gm = &gre_main; + gre_protocol_info_t *pi = gre_get_protocol_info (gm, p); if (pi) s = format (s, "%s", pi->name); @@ -76,10 +83,11 @@ u8 * format_gre_protocol (u8 * s, va_list * args) return s; } -u8 * format_gre_header_with_length (u8 * s, va_list * args) +u8 * +format_gre_header_with_length (u8 * s, va_list * args) { - gre_main_t * gm = &gre_main; - gre_header_t * h = va_arg (*args, gre_header_t *); + gre_main_t *gm = &gre_main; + gre_header_t *h = va_arg (*args, gre_header_t *); u32 max_header_bytes = va_arg (*args, u32); gre_protocol_t p = clib_net_to_host_u16 (h->protocol); u32 indent, header_bytes; @@ -94,8 +102,8 @@ u8 * format_gre_header_with_length (u8 * s, va_list * args) if (max_header_bytes != 0 && header_bytes > max_header_bytes) { - gre_protocol_info_t * pi = gre_get_protocol_info (gm, p); - vlib_node_t * node = vlib_get_node (gm->vlib_main, pi->node_index); + gre_protocol_info_t *pi = gre_get_protocol_info (gm, p); + vlib_node_t *node = vlib_get_node (gm->vlib_main, pi->node_index); if (node->format_buffer) s = format (s, "\n%U%U", format_white_space, indent, @@ -106,9 +114,10 @@ u8 * format_gre_header_with_length (u8 * s, va_list * args) return s; } -u8 * format_gre_header (u8 * s, va_list * args) +u8 * +format_gre_header (u8 * s, va_list * args) { - gre_header_t * h = va_arg (*args, gre_header_t *); + gre_header_t *h = va_arg (*args, gre_header_t *); return format (s, "%U", format_gre_header_with_length, h, 0); } @@ -117,15 +126,15 @@ uword unformat_gre_protocol_host_byte_order (unformat_input_t * input, va_list * args) { - u16 * result = va_arg (*args, u16 *); - gre_main_t * gm = &gre_main; + u16 *result = va_arg (*args, u16 *); + gre_main_t *gm = &gre_main; int i; /* Named type. */ if (unformat_user (input, unformat_vlib_number_by_name, gm->protocol_info_by_name, &i)) { - gre_protocol_info_t * pi = vec_elt_at_index (gm->protocol_infos, i); + gre_protocol_info_t *pi = vec_elt_at_index (gm->protocol_infos, i); *result = pi->protocol; return 1; } @@ -137,29 +146,28 @@ uword unformat_gre_protocol_net_byte_order (unformat_input_t * input, va_list * args) { - u16 * result = va_arg (*args, u16 *); - if (! unformat_user (input, unformat_gre_protocol_host_byte_order, result)) + u16 *result = va_arg (*args, u16 *); + if (!unformat_user (input, unformat_gre_protocol_host_byte_order, result)) return 0; - *result = clib_host_to_net_u16 ((u16) *result); + *result = clib_host_to_net_u16 ((u16) * result); return 1; } uword unformat_gre_header (unformat_input_t * input, va_list * args) { - u8 ** result = va_arg (*args, u8 **); - gre_header_t _h, * h = &_h; + u8 **result = va_arg (*args, u8 **); + gre_header_t _h, *h = &_h; u16 p; - if (! unformat (input, "%U", - unformat_gre_protocol_host_byte_order, &p)) + if (!unformat (input, "%U", unformat_gre_protocol_host_byte_order, &p)) return 0; h->protocol = clib_host_to_net_u16 (p); /* Add header to result. */ { - void * p; + void *p; u32 n_bytes = sizeof (h[0]); vec_add2 (*result, p, n_bytes); @@ -172,36 +180,35 @@ unformat_gre_header (unformat_input_t * input, va_list * args) static int gre_proto_from_vnet_link (vnet_link_t link) { - switch (link) + switch (link) { case VNET_LINK_IP4: - return (GRE_PROTOCOL_ip4); + return (GRE_PROTOCOL_ip4); case VNET_LINK_IP6: - return (GRE_PROTOCOL_ip6); + return (GRE_PROTOCOL_ip6); case VNET_LINK_MPLS: - return (GRE_PROTOCOL_mpls_unicast); + return (GRE_PROTOCOL_mpls_unicast); case VNET_LINK_ETHERNET: - return (GRE_PROTOCOL_teb); + return (GRE_PROTOCOL_teb); case VNET_LINK_ARP: - return (GRE_PROTOCOL_arp); + return (GRE_PROTOCOL_arp); case VNET_LINK_NSH: - ASSERT(0); - break; + ASSERT (0); + break; } - ASSERT(0); - return (GRE_PROTOCOL_ip4); + ASSERT (0); + return (GRE_PROTOCOL_ip4); } -static u8* +static u8 * gre_build_rewrite (vnet_main_t * vnm, u32 sw_if_index, - vnet_link_t link_type, - const void *dst_address) + vnet_link_t link_type, const void *dst_address) { - gre_main_t * gm = &gre_main; - ip4_and_gre_header_t * h4; - ip6_and_gre_header_t * h6; - u8* rewrite = NULL; + gre_main_t *gm = &gre_main; + ip4_and_gre_header_t *h4; + ip6_and_gre_header_t *h6; + u8 *rewrite = NULL; gre_tunnel_t *t; u32 ti; u8 is_ipv6; @@ -209,18 +216,19 @@ gre_build_rewrite (vnet_main_t * vnm, ti = gm->tunnel_index_by_sw_if_index[sw_if_index]; if (~0 == ti) - /* not one of ours */ - return (0); + /* not one of ours */ + return (0); - t = pool_elt_at_index(gm->tunnels, ti); + t = pool_elt_at_index (gm->tunnels, ti); is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0; if (!is_ipv6) { - vec_validate(rewrite, sizeof(*h4)-1); - h4 = (ip4_and_gre_header_t*)rewrite; - h4->gre.protocol = clib_host_to_net_u16(gre_proto_from_vnet_link(link_type)); + vec_validate (rewrite, sizeof (*h4) - 1); + h4 = (ip4_and_gre_header_t *) rewrite; + h4->gre.protocol = + clib_host_to_net_u16 (gre_proto_from_vnet_link (link_type)); h4->ip4.ip_version_and_header_length = 0x45; h4->ip4.ttl = 254; @@ -232,11 +240,13 @@ gre_build_rewrite (vnet_main_t * vnm, } else { - vec_validate(rewrite, sizeof(*h6)-1); - h6 = (ip6_and_gre_header_t*)rewrite; - h6->gre.protocol = clib_host_to_net_u16(gre_proto_from_vnet_link(link_type)); + vec_validate (rewrite, sizeof (*h6) - 1); + h6 = (ip6_and_gre_header_t *) rewrite; + h6->gre.protocol = + clib_host_to_net_u16 (gre_proto_from_vnet_link (link_type)); - h6->ip6.ip_version_traffic_class_and_flow_label = clib_host_to_net_u32(6 << 28); + h6->ip6.ip_version_traffic_class_and_flow_label = + clib_host_to_net_u32 (6 << 28); h6->ip6.hop_limit = 255; h6->ip6.protocol = IP_PROTOCOL_GRE; /* fixup ip6 header length and checksum after-the-fact */ @@ -252,59 +262,55 @@ gre_build_rewrite (vnet_main_t * vnm, #define is_v4_packet(_h) ((*(u8*) _h) & 0xF0) == 0x40 void -gre4_fixup (vlib_main_t *vm, - ip_adjacency_t *adj, - vlib_buffer_t *b0) +gre4_fixup (vlib_main_t * vm, ip_adjacency_t * adj, vlib_buffer_t * b0) { - ip4_header_t * ip0; + ip4_header_t *ip0; - ip0 = vlib_buffer_get_current (b0); + ip0 = vlib_buffer_get_current (b0); - /* Fixup the checksum and len fields in the GRE tunnel encap - * that was applied at the midchain node */ - ip0->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)); - ip0->checksum = ip4_header_checksum (ip0); + /* Fixup the checksum and len fields in the GRE tunnel encap + * that was applied at the midchain node */ + ip0->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)); + ip0->checksum = ip4_header_checksum (ip0); } void -gre6_fixup (vlib_main_t *vm, - ip_adjacency_t *adj, - vlib_buffer_t *b0) +gre6_fixup (vlib_main_t * vm, ip_adjacency_t * adj, vlib_buffer_t * b0) { - ip6_header_t * ip0; + ip6_header_t *ip0; - ip0 = vlib_buffer_get_current (b0); + ip0 = vlib_buffer_get_current (b0); - /* Fixup the payload length field in the GRE tunnel encap that was applied - * at the midchain node */ - ip0->payload_length = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)) - - sizeof(*ip0); + /* Fixup the payload length field in the GRE tunnel encap that was applied + * at the midchain node */ + ip0->payload_length = + clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)) + - sizeof (*ip0); } void -gre_update_adj (vnet_main_t * vnm, - u32 sw_if_index, - adj_index_t ai) +gre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai) { - gre_main_t * gm = &gre_main; - gre_tunnel_t *t; - u32 ti; - u8 is_ipv6; - - ti = gm->tunnel_index_by_sw_if_index[sw_if_index]; - t = pool_elt_at_index(gm->tunnels, ti); - is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0; - - adj_nbr_midchain_update_rewrite (ai, !is_ipv6 ? gre4_fixup : gre6_fixup, - (VNET_LINK_ETHERNET == adj_get_link_type (ai) ? - ADJ_FLAG_MIDCHAIN_NO_COUNT : - ADJ_FLAG_NONE), - gre_build_rewrite(vnm, sw_if_index, - adj_get_link_type(ai), - NULL)); - - gre_tunnel_stack(ai); + gre_main_t *gm = &gre_main; + gre_tunnel_t *t; + u32 ti; + u8 is_ipv6; + + ti = gm->tunnel_index_by_sw_if_index[sw_if_index]; + t = pool_elt_at_index (gm->tunnels, ti); + is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0; + + adj_nbr_midchain_update_rewrite (ai, !is_ipv6 ? gre4_fixup : gre6_fixup, + (VNET_LINK_ETHERNET == + adj_get_link_type (ai) ? + ADJ_FLAG_MIDCHAIN_NO_COUNT : + ADJ_FLAG_NONE), gre_build_rewrite (vnm, + sw_if_index, + adj_get_link_type + (ai), + NULL)); + + gre_tunnel_stack (ai); } /** @@ -312,13 +318,12 @@ gre_update_adj (vnet_main_t * vnm, */ static uword gre_interface_tx_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) + vlib_node_runtime_t * node, vlib_frame_t * frame) { - gre_main_t * gm = &gre_main; + gre_main_t *gm = &gre_main; u32 next_index; - u32 * from, * to_next, n_left_from, n_left_to_next; - vnet_interface_output_runtime_t * rd = (void *) node->runtime_data; + u32 *from, *to_next, n_left_from, n_left_to_next; + vnet_interface_output_runtime_t *rd = (void *) node->runtime_data; const gre_tunnel_t *gt = pool_elt_at_index (gm->tunnels, rd->dev_instance); u8 is_ipv6 = gt->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0; @@ -342,7 +347,7 @@ gre_interface_tx_inline (vlib_main_t * vm, while (n_left_from > 0 && n_left_to_next > 0) { - vlib_buffer_t * b0; + vlib_buffer_t *b0; u32 bi0; bi0 = from[0]; @@ -352,18 +357,18 @@ gre_interface_tx_inline (vlib_main_t * vm, n_left_from -= 1; n_left_to_next -= 1; - b0 = vlib_get_buffer(vm, bi0); + b0 = vlib_get_buffer (vm, bi0); - vnet_buffer(b0)->ip.adj_index[VLIB_TX] = gt->l2_adj_index; + vnet_buffer (b0)->ip.adj_index[VLIB_TX] = gt->l2_adj_index; - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { gre_tx_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->tunnel_id = gt - gm->tunnels; - tr->src = gt->tunnel_src; - tr->dst = gt->tunnel_src; - tr->length = vlib_buffer_length_in_chain (vm, b0); + tr->tunnel_id = gt - gm->tunnels; + tr->src = gt->tunnel_src; + tr->dst = gt->tunnel_src; + tr->length = vlib_buffer_length_in_chain (vm, b0); } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, @@ -375,7 +380,7 @@ gre_interface_tx_inline (vlib_main_t * vm, } vlib_node_increment_counter (vm, !is_ipv6 ? gre4_input_node.index : - gre6_input_node.index, + gre6_input_node.index, GRE_ERROR_PKTS_ENCAP, frame->n_vectors); return frame->n_vectors; @@ -383,33 +388,34 @@ gre_interface_tx_inline (vlib_main_t * vm, static uword gre_interface_tx (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) + vlib_node_runtime_t * node, vlib_frame_t * frame) { - return (gre_interface_tx_inline (vm, node, frame)); + return (gre_interface_tx_inline (vm, node, frame)); } static uword gre_teb_interface_tx (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) + vlib_node_runtime_t * node, vlib_frame_t * frame) { - return (gre_interface_tx_inline (vm, node, frame)); + return (gre_interface_tx_inline (vm, node, frame)); } -static u8 * format_gre_tunnel_name (u8 * s, va_list * args) +static u8 * +format_gre_tunnel_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); return format (s, "gre%d", dev_instance); } -static u8 * format_gre_tunnel_teb_name (u8 * s, va_list * args) +static u8 * +format_gre_tunnel_teb_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); return format (s, "teb-gre%d", dev_instance); } -static u8 * format_gre_device (u8 * s, va_list * args) +static u8 * +format_gre_device (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); CLIB_UNUSED (int verbose) = va_arg (*args, int); @@ -418,6 +424,7 @@ static u8 * format_gre_device (u8 * s, va_list * args) return s; } +/* *INDENT-OFF* */ VNET_DEVICE_CLASS (gre_device_class) = { .name = "GRE tunnel device", .format_device_name = format_gre_tunnel_name, @@ -429,9 +436,12 @@ VNET_DEVICE_CLASS (gre_device_class) = { .clear counter = 0; #endif }; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ VLIB_DEVICE_TX_FUNCTION_MULTIARCH (gre_device_class, - gre_interface_tx) + gre_interface_tx) VNET_DEVICE_CLASS (gre_device_teb_class) = { .name = "GRE TEB tunnel device", @@ -445,8 +455,11 @@ VNET_DEVICE_CLASS (gre_device_teb_class) = { #endif }; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ VLIB_DEVICE_TX_FUNCTION_MULTIARCH (gre_device_teb_class, - gre_teb_interface_tx) + gre_teb_interface_tx) VNET_HW_INTERFACE_CLASS (gre_hw_interface_class) = { .name = "GRE", @@ -456,12 +469,12 @@ VNET_HW_INTERFACE_CLASS (gre_hw_interface_class) = { .update_adjacency = gre_update_adj, .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P, }; +/* *INDENT-ON* */ -static void add_protocol (gre_main_t * gm, - gre_protocol_t protocol, - char * protocol_name) +static void +add_protocol (gre_main_t * gm, gre_protocol_t protocol, char *protocol_name) { - gre_protocol_info_t * pi; + gre_protocol_info_t *pi; u32 i; vec_add2 (gm->protocol_infos, pi, 1); @@ -475,16 +488,17 @@ static void add_protocol (gre_main_t * gm, hash_set_mem (gm->protocol_info_by_name, pi->name, i); } -static clib_error_t * gre_init (vlib_main_t * vm) +static clib_error_t * +gre_init (vlib_main_t * vm) { - gre_main_t * gm = &gre_main; - clib_error_t * error; - ip_main_t * im = &ip_main; - ip_protocol_info_t * pi; + gre_main_t *gm = &gre_main; + clib_error_t *error; + ip_main_t *im = &ip_main; + ip_protocol_info_t *pi; memset (gm, 0, sizeof (gm[0])); gm->vlib_main = vm; - gm->vnet_main = vnet_get_main(); + gm->vnet_main = vnet_get_main (); if ((error = vlib_call_init_function (vm, ip_main_init))) return error; @@ -503,20 +517,28 @@ static clib_error_t * gre_init (vlib_main_t * vm) gm->protocol_info_by_name = hash_create_string (0, sizeof (uword)); gm->protocol_info_by_protocol = hash_create (0, sizeof (uword)); gm->tunnel_by_key4 = hash_create (0, sizeof (uword)); - gm->tunnel_by_key6 = hash_create_mem (0, sizeof(u64[4]), sizeof (uword)); + gm->tunnel_by_key6 = hash_create_mem (0, sizeof (u64[4]), sizeof (uword)); #define _(n,s) add_protocol (gm, GRE_PROTOCOL_##s, #s); foreach_gre_protocol #undef _ - - return vlib_call_init_function (vm, gre_input_init); + return vlib_call_init_function (vm, gre_input_init); } VLIB_INIT_FUNCTION (gre_init); -gre_main_t * gre_get_main (vlib_main_t * vm) +gre_main_t * +gre_get_main (vlib_main_t * vm) { vlib_call_init_function (vm, gre_init); return &gre_main; } + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |