diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vnet/tcp/tcp.c | 6 | ||||
| -rw-r--r-- | src/vnet/tcp/tcp.h | 3 | ||||
| -rw-r--r-- | src/vnet/tcp/tcp_output.c | 36 |
3 files changed, 20 insertions, 25 deletions
diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c index 86729011f8f..baa5c0daa61 100644 --- a/src/vnet/tcp/tcp.c +++ b/src/vnet/tcp/tcp.c @@ -705,6 +705,9 @@ tcp_init_snd_vars (tcp_connection_t * tc) tc->snd_nxt = tc->iss + 1; tc->snd_una_max = tc->snd_nxt; tc->srtt = 100; /* 100 ms */ + + if (!tcp_cfg.csum_offload) + tc->cfg_flags |= TCP_CFG_F_NO_CSUM_OFFLOAD; } void @@ -1656,6 +1659,7 @@ tcp_configuration_init (void) tcp_cfg.initial_cwnd_multiplier = 0; tcp_cfg.enable_tx_pacing = 1; tcp_cfg.allow_tso = 0; + tcp_cfg.csum_offload = 1; tcp_cfg.cc_algo = TCP_CC_NEWRENO; tcp_cfg.rwnd_min_update_ack = 1; @@ -1797,6 +1801,8 @@ tcp_config_fn (vlib_main_t * vm, unformat_input_t * input) tcp_cfg.enable_tx_pacing = 0; else if (unformat (input, "tso")) tcp_cfg.allow_tso = 1; + else if (unformat (input, "no-csum-offload")) + tcp_cfg.csum_offload = 0; else if (unformat (input, "cc-algo %U", unformat_tcp_cc_algo, &tcp_cfg.cc_algo)) ; diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h index e9247eb86b2..299e76de5a7 100644 --- a/src/vnet/tcp/tcp.h +++ b/src/vnet/tcp/tcp.h @@ -558,6 +558,9 @@ typedef struct tcp_configuration_ /** Allow use of TSO whenever available */ u8 allow_tso; + /** Set if csum offloading is enabled */ + u8 csum_offload; + /** Default congestion control algorithm type */ tcp_cc_algorithm_type_e cc_algo; diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c index c06bbf19ef4..d6e1adc9600 100644 --- a/src/vnet/tcp/tcp_output.c +++ b/src/vnet/tcp/tcp_output.c @@ -896,26 +896,15 @@ static void tcp_push_ip_hdr (tcp_worker_ctx_t * wrk, tcp_connection_t * tc, vlib_buffer_t * b) { - tcp_header_t *th = vlib_buffer_get_current (b); - vlib_main_t *vm = wrk->vm; if (tc->c_is_ip4) { - ip4_header_t *ih; - ih = vlib_buffer_push_ip4 (vm, b, &tc->c_lcl_ip4, - &tc->c_rmt_ip4, IP_PROTOCOL_TCP, - tcp_csum_offload (tc)); - th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ih); + vlib_buffer_push_ip4 (wrk->vm, b, &tc->c_lcl_ip4, &tc->c_rmt_ip4, + IP_PROTOCOL_TCP, tcp_csum_offload (tc)); } else { - ip6_header_t *ih; - int bogus = ~0; - - ih = vlib_buffer_push_ip6_custom (vm, b, &tc->c_lcl_ip6, - &tc->c_rmt_ip6, IP_PROTOCOL_TCP, - tc->ipv6_flow_label); - th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ih, &bogus); - ASSERT (!bogus); + vlib_buffer_push_ip6_custom (wrk->vm, b, &tc->c_lcl_ip6, &tc->c_rmt_ip6, + IP_PROTOCOL_TCP, tc->ipv6_flow_label); } } @@ -2270,19 +2259,16 @@ always_inline void tcp_output_push_ip (vlib_main_t * vm, vlib_buffer_t * b0, tcp_connection_t * tc0, u8 is_ip4) { - u8 __clib_unused *ih0; - tcp_header_t __clib_unused *th0 = vlib_buffer_get_current (b0); - - TCP_EVT (TCP_EVT_OUTPUT, tc0, th0->flags, b0->current_length); + TCP_EVT (TCP_EVT_OUTPUT, tc0, + ((tcp_header_t *) vlib_buffer_get_current (b0))->flags, + b0->current_length); if (is_ip4) - ih0 = vlib_buffer_push_ip4 (vm, b0, &tc0->c_lcl_ip4, &tc0->c_rmt_ip4, - IP_PROTOCOL_TCP, tcp_csum_offload (tc0)); + vlib_buffer_push_ip4 (vm, b0, &tc0->c_lcl_ip4, &tc0->c_rmt_ip4, + IP_PROTOCOL_TCP, tcp_csum_offload (tc0)); else - ih0 = - vlib_buffer_push_ip6_custom (vm, b0, &tc0->c_lcl_ip6, &tc0->c_rmt_ip6, - IP_PROTOCOL_TCP, tc0->ipv6_flow_label); - + vlib_buffer_push_ip6_custom (vm, b0, &tc0->c_lcl_ip6, &tc0->c_rmt_ip6, + IP_PROTOCOL_TCP, tc0->ipv6_flow_label); } always_inline void |