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authorFlorin Coras <fcoras@cisco.com>2021-04-12 19:55:37 -0700
committerDave Barach <openvpp@barachs.net>2021-04-14 16:01:50 +0000
commit04ae8273f64a4f5a771da9b056bcccd1ebf9c7d9 (patch)
tree09597fb999f63e30a22424d9a3a0e616a24c28b9 /src/vnet/tcp
parent7bc714da36bb9badec2ad5bf848c6b90caabad0a (diff)
session tcp vcl: api to update connection attributes
Type: feature Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ifdd6024daf044751895bb8d2deabad41d3a80c92
Diffstat (limited to 'src/vnet/tcp')
-rw-r--r--src/vnet/tcp/tcp.c96
-rw-r--r--src/vnet/tcp/tcp.h1
-rw-r--r--src/vnet/tcp/tcp_input.c6
3 files changed, 103 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index 2d384a65cfc..7f1e63e7b84 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -873,6 +873,101 @@ tcp_half_open_session_get_transport (u32 conn_index)
return &tc->connection;
}
+static int
+tcp_set_attribute (tcp_connection_t *tc, transport_endpt_attr_t *attr)
+{
+ int rv = 0;
+
+ switch (attr->type)
+ {
+ case TRANSPORT_ENDPT_ATTR_NEXT_OUTPUT_NODE:
+ tc->next_node_index = attr->next_output_node & 0xffffffff;
+ tc->next_node_opaque = attr->next_output_node >> 32;
+ break;
+ case TRANSPORT_ENDPT_ATTR_MSS:
+ tc->mss = attr->mss;
+ tc->snd_mss = clib_min (tc->snd_mss, tc->mss);
+ break;
+ case TRANSPORT_ENDPT_ATTR_FLAGS:
+ if (attr->flags & TRANSPORT_ENDPT_ATTR_F_CSUM_OFFLOAD)
+ tc->cfg_flags |= TCP_CFG_F_NO_CSUM_OFFLOAD;
+ else
+ tc->cfg_flags &= ~TCP_CFG_F_NO_CSUM_OFFLOAD;
+ if (attr->flags & TRANSPORT_ENDPT_ATTR_F_GSO)
+ {
+ if (!(tc->cfg_flags & TCP_CFG_F_TSO))
+ tcp_check_gso (tc);
+ tc->cfg_flags &= ~TCP_CFG_F_NO_TSO;
+ }
+ else
+ {
+ tc->cfg_flags |= TCP_CFG_F_NO_TSO;
+ tc->cfg_flags &= ~TCP_CFG_F_TSO;
+ }
+ break;
+ case TRANSPORT_ENDPT_ATTR_CC_ALGO:
+ if (tc->cc_algo == tcp_cc_algo_get (attr->cc_algo))
+ break;
+ tcp_cc_cleanup (tc);
+ tc->cc_algo = tcp_cc_algo_get (attr->cc_algo);
+ tcp_cc_init (tc);
+ break;
+ default:
+ rv = -1;
+ break;
+ }
+
+ return rv;
+}
+
+static int
+tcp_get_attribute (tcp_connection_t *tc, transport_endpt_attr_t *attr)
+{
+ int rv = 0;
+ u64 non;
+
+ switch (attr->type)
+ {
+ case TRANSPORT_ENDPT_ATTR_NEXT_OUTPUT_NODE:
+ non = (u64) tc->next_node_opaque << 32 | tc->next_node_index;
+ attr->next_output_node = non;
+ break;
+ case TRANSPORT_ENDPT_ATTR_MSS:
+ attr->mss = tc->snd_mss;
+ break;
+ case TRANSPORT_ENDPT_ATTR_FLAGS:
+ attr->flags = 0;
+ if (!(tc->cfg_flags & TCP_CFG_F_NO_CSUM_OFFLOAD))
+ attr->flags |= TRANSPORT_ENDPT_ATTR_F_CSUM_OFFLOAD;
+ if (tc->cfg_flags & TCP_CFG_F_TSO)
+ attr->flags |= TRANSPORT_ENDPT_ATTR_F_GSO;
+ break;
+ case TRANSPORT_ENDPT_ATTR_CC_ALGO:
+ attr->cc_algo = tc->cc_algo - tcp_main.cc_algos;
+ break;
+ default:
+ rv = -1;
+ break;
+ }
+
+ return rv;
+}
+
+static int
+tcp_session_attribute (u32 conn_index, u32 thread_index, u8 is_get,
+ transport_endpt_attr_t *attr)
+{
+ tcp_connection_t *tc = tcp_connection_get (conn_index, thread_index);
+
+ if (PREDICT_FALSE (!tc))
+ return -1;
+
+ if (is_get)
+ return tcp_get_attribute (tc, attr);
+ else
+ return tcp_set_attribute (tc, attr);
+}
+
static u16
tcp_session_cal_goal_size (tcp_connection_t * tc)
{
@@ -1172,6 +1267,7 @@ const static transport_proto_vft_t tcp_proto = {
.get_connection = tcp_session_get_transport,
.get_listener = tcp_session_get_listener,
.get_half_open = tcp_half_open_session_get_transport,
+ .attribute = tcp_session_attribute,
.connect = tcp_session_open,
.close = tcp_session_close,
.cleanup = tcp_session_cleanup,
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index 418bc476cb9..23b61313568 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -336,6 +336,7 @@ void tcp_connection_tx_pacer_update (tcp_connection_t * tc);
void tcp_connection_tx_pacer_reset (tcp_connection_t * tc, u32 window,
u32 start_bucket);
void tcp_program_cleanup (tcp_worker_ctx_t * wrk, tcp_connection_t * tc);
+void tcp_check_gso (tcp_connection_t *tc);
void tcp_punt_unknown (vlib_main_t * vm, u8 is_ip4, u8 is_add);
int tcp_configure_v4_source_address_range (vlib_main_t * vm,
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index b64c236bd47..398bf1b76a7 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -3050,6 +3050,12 @@ VLIB_REGISTER_NODE (tcp6_input_node) =
/* *INDENT-ON* */
#ifndef CLIB_MARCH_VARIANT
+void
+tcp_check_gso (tcp_connection_t *tc)
+{
+ tcp_check_tx_offload (tc, tc->c_is_ip4);
+}
+
static void
tcp_dispatch_table_init (tcp_main_t * tm)
{