diff options
Diffstat (limited to 'src/vnet/tcp/tcp_input.c')
| -rwxr-xr-x | src/vnet/tcp/tcp_input.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c index 1a9eff51a72..9c1f6309b96 100755 --- a/src/vnet/tcp/tcp_input.c +++ b/src/vnet/tcp/tcp_input.c @@ -14,6 +14,8 @@ */ #include <vppinfra/sparse_vec.h> +#include <vnet/fib/ip4_fib.h> +#include <vnet/fib/ip6_fib.h> #include <vnet/tcp/tcp_packet.h> #include <vnet/tcp/tcp.h> #include <vnet/session/session.h> @@ -2292,6 +2294,37 @@ tcp_lookup_connection (u32 fib_index, vlib_buffer_t * b, u8 thread_index, return tc; } +always_inline void +tcp_check_tx_offload (tcp_connection_t * tc, int is_ipv4) +{ + vnet_main_t *vnm = vnet_get_main (); + const dpo_id_t *dpo; + const load_balance_t *lb; + vnet_hw_interface_t *hw_if; + u32 sw_if_idx, lb_idx; + + if (is_ipv4) + { + ip4_address_t *dst_addr = &(tc->c_rmt_ip.ip4); + lb_idx = ip4_fib_forwarding_lookup (tc->c_fib_index, dst_addr); + } + else + { + ip6_address_t *dst_addr = &(tc->c_rmt_ip.ip6); + lb_idx = ip6_fib_table_fwding_lookup (tc->c_fib_index, dst_addr); + } + + lb = load_balance_get (lb_idx); + dpo = load_balance_get_bucket_i (lb, 0); + + sw_if_idx = dpo->dpoi_index; + hw_if = vnet_get_sup_hw_interface (vnm, sw_if_idx); + + tc->is_tso = + ((hw_if->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0) ? 0 : 1; +} + + always_inline uword tcp46_syn_sent_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame, int is_ip4) @@ -2508,6 +2541,8 @@ tcp46_syn_sent_inline (vlib_main_t * vm, vlib_node_runtime_t * node, goto drop; } + tcp_check_tx_offload (new_tc0, is_ip4); + /* Read data, if any */ if (PREDICT_FALSE (vnet_buffer (b0)->tcp.data_len)) { @@ -2694,6 +2729,8 @@ tcp46_rcv_process_inline (vlib_main_t * vm, vlib_node_runtime_t * node, tc0->state = TCP_STATE_ESTABLISHED; TCP_EVT (TCP_EVT_STATE_CHANGE, tc0); + tcp_check_tx_offload (tc0, is_ip4); + /* Initialize session variables */ tc0->snd_una = vnet_buffer (b0)->tcp.ack_number; tc0->snd_wnd = clib_net_to_host_u16 (tcp0->window) |