diff options
Diffstat (limited to 'src/vnet/gre/node.c')
| -rw-r--r-- | src/vnet/gre/node.c | 880 |
1 files changed, 446 insertions, 434 deletions
diff --git a/src/vnet/gre/node.c b/src/vnet/gre/node.c index acf15f247f0..e10f116fa6d 100644 --- a/src/vnet/gre/node.c +++ b/src/vnet/gre/node.c @@ -29,14 +29,16 @@ _(IP4_INPUT, "ip4-input") \ _(IP6_INPUT, "ip6-input") \ _(MPLS_INPUT, "mpls-input") -typedef enum { +typedef enum +{ #define _(s,n) GRE_INPUT_NEXT_##s, foreach_gre_input_next #undef _ - GRE_INPUT_N_NEXT, + GRE_INPUT_N_NEXT, } gre_input_next_t; -typedef struct { +typedef struct +{ u32 tunnel_id; u32 length; ip46_address_t src; @@ -44,45 +46,45 @@ typedef struct { u8 is_ipv6; } gre_rx_trace_t; -u8 * format_gre_rx_trace (u8 * s, va_list * args) +u8 * +format_gre_rx_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_rx_trace_t * t = va_arg (*args, gre_rx_trace_t *); + gre_rx_trace_t *t = va_arg (*args, gre_rx_trace_t *); s = format (s, "GRE: tunnel %d len %d src %U dst %U", - t->tunnel_id, clib_net_to_host_u16(t->length), - format_ip46_address, &t->src, IP46_TYPE_ANY, - format_ip46_address, &t->dst, IP46_TYPE_ANY); + t->tunnel_id, clib_net_to_host_u16 (t->length), + format_ip46_address, &t->src, IP46_TYPE_ANY, + format_ip46_address, &t->dst, IP46_TYPE_ANY); return s; } -typedef struct { +typedef struct +{ /* Sparse vector mapping gre protocol in network byte order to next index. */ - u16 * next_by_protocol; + u16 *next_by_protocol; } gre_input_runtime_t; always_inline uword gre_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame, - u8 is_ipv6) + vlib_node_runtime_t * node, vlib_frame_t * from_frame, u8 is_ipv6) { - gre_main_t * gm = &gre_main; - __attribute__((unused)) u32 n_left_from, next_index, * from, * to_next; + gre_main_t *gm = &gre_main; + __attribute__ ((unused)) u32 n_left_from, next_index, *from, *to_next; u64 cached_tunnel_key4; u64 cached_tunnel_key6[4]; u32 cached_tunnel_sw_if_index = 0, tunnel_sw_if_index = 0; - u32 thread_index = vlib_get_thread_index(); + u32 thread_index = vlib_get_thread_index (); u32 len; vnet_interface_main_t *im = &gm->vnet_main->interface_main; if (!is_ipv6) - memset (&cached_tunnel_key4, 0xff, sizeof(cached_tunnel_key4)); + memset (&cached_tunnel_key4, 0xff, sizeof (cached_tunnel_key4)); else - memset (&cached_tunnel_key6, 0xff, sizeof(cached_tunnel_key6)); + memset (&cached_tunnel_key6, 0xff, sizeof (cached_tunnel_key6)); from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; @@ -93,27 +95,26 @@ gre_input (vlib_main_t * vm, { u32 n_left_to_next; - vlib_get_next_frame (vm, node, next_index, - to_next, n_left_to_next); + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from >= 4 && n_left_to_next >= 2) { u32 bi0, bi1; - vlib_buffer_t * b0, * b1; - gre_header_t * h0, * h1; - u16 version0, version1; - int verr0, verr1; + vlib_buffer_t *b0, *b1; + gre_header_t *h0, *h1; + u16 version0, version1; + int verr0, verr1; u32 i0, i1, next0, next1, protocol0, protocol1; - ip4_header_t *ip4_0, *ip4_1; - ip6_header_t *ip6_0, *ip6_1; - u32 ip4_tun_src0, ip4_tun_dst0; - u32 ip4_tun_src1, ip4_tun_dst1; - u64 ip6_tun_src0[2], ip6_tun_dst0[2]; - u64 ip6_tun_src1[2], ip6_tun_dst1[2]; + ip4_header_t *ip4_0, *ip4_1; + ip6_header_t *ip6_0, *ip6_1; + u32 ip4_tun_src0, ip4_tun_dst0; + u32 ip4_tun_src1, ip4_tun_dst1; + u64 ip6_tun_src0[2], ip6_tun_dst0[2]; + u64 ip6_tun_src1[2], ip6_tun_dst1[2]; /* Prefetch next iteration. */ { - vlib_buffer_t * p2, * p3; + vlib_buffer_t *p2, *p3; p2 = vlib_get_buffer (vm, from[2]); p3 = vlib_get_buffer (vm, from[3]); @@ -137,38 +138,38 @@ gre_input (vlib_main_t * vm, b0 = vlib_get_buffer (vm, bi0); b1 = vlib_get_buffer (vm, bi1); - if (!is_ipv6) - { - /* ip4_local hands us the ip header, not the gre header */ - ip4_0 = vlib_buffer_get_current (b0); - ip4_1 = vlib_buffer_get_current (b1); - /* Save src + dst ip4 address, e.g. for mpls-o-gre */ - ip4_tun_src0 = ip4_0->src_address.as_u32; - ip4_tun_dst0 = ip4_0->dst_address.as_u32; - ip4_tun_src1 = ip4_1->src_address.as_u32; - ip4_tun_dst1 = ip4_1->dst_address.as_u32; - - vlib_buffer_advance (b0, sizeof (*ip4_0)); - vlib_buffer_advance (b1, sizeof (*ip4_1)); - } - else - { - /* ip6_local hands us the ip header, not the gre header */ - ip6_0 = vlib_buffer_get_current (b0); - ip6_1 = vlib_buffer_get_current (b1); - /* Save src + dst ip6 address, e.g. for mpls-o-gre */ - ip6_tun_src0[0] = ip6_0->src_address.as_u64[0]; - ip6_tun_src0[1] = ip6_0->src_address.as_u64[1]; - ip6_tun_dst0[0] = ip6_0->dst_address.as_u64[0]; - ip6_tun_dst0[1] = ip6_0->dst_address.as_u64[1]; - ip6_tun_src1[0] = ip6_1->src_address.as_u64[0]; - ip6_tun_src1[1] = ip6_1->src_address.as_u64[1]; - ip6_tun_dst1[0] = ip6_1->dst_address.as_u64[0]; - ip6_tun_dst1[1] = ip6_1->dst_address.as_u64[1]; - - vlib_buffer_advance (b0, sizeof (*ip6_0)); - vlib_buffer_advance (b1, sizeof (*ip6_1)); - } + if (!is_ipv6) + { + /* ip4_local hands us the ip header, not the gre header */ + ip4_0 = vlib_buffer_get_current (b0); + ip4_1 = vlib_buffer_get_current (b1); + /* Save src + dst ip4 address, e.g. for mpls-o-gre */ + ip4_tun_src0 = ip4_0->src_address.as_u32; + ip4_tun_dst0 = ip4_0->dst_address.as_u32; + ip4_tun_src1 = ip4_1->src_address.as_u32; + ip4_tun_dst1 = ip4_1->dst_address.as_u32; + + vlib_buffer_advance (b0, sizeof (*ip4_0)); + vlib_buffer_advance (b1, sizeof (*ip4_1)); + } + else + { + /* ip6_local hands us the ip header, not the gre header */ + ip6_0 = vlib_buffer_get_current (b0); + ip6_1 = vlib_buffer_get_current (b1); + /* Save src + dst ip6 address, e.g. for mpls-o-gre */ + ip6_tun_src0[0] = ip6_0->src_address.as_u64[0]; + ip6_tun_src0[1] = ip6_0->src_address.as_u64[1]; + ip6_tun_dst0[0] = ip6_0->dst_address.as_u64[0]; + ip6_tun_dst0[1] = ip6_0->dst_address.as_u64[1]; + ip6_tun_src1[0] = ip6_1->src_address.as_u64[0]; + ip6_tun_src1[1] = ip6_1->src_address.as_u64[1]; + ip6_tun_dst1[0] = ip6_1->dst_address.as_u64[0]; + ip6_tun_dst1[1] = ip6_1->dst_address.as_u64[1]; + + vlib_buffer_advance (b0, sizeof (*ip6_0)); + vlib_buffer_advance (b1, sizeof (*ip6_1)); + } h0 = vlib_buffer_get_current (b0); h1 = vlib_buffer_get_current (b1); @@ -177,205 +178,209 @@ gre_input (vlib_main_t * vm, protocol0 = h0->protocol; protocol1 = h1->protocol; sparse_vec_index2 (gm->next_by_protocol, protocol0, protocol1, - &i0, &i1); - next0 = vec_elt(gm->next_by_protocol, i0); - next1 = vec_elt(gm->next_by_protocol, i1); - - b0->error = node->errors[i0 == SPARSE_VEC_INVALID_INDEX ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE]; - b1->error = node->errors[i1 == SPARSE_VEC_INVALID_INDEX ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE]; - - version0 = clib_net_to_host_u16 (h0->flags_and_version); - verr0 = version0 & GRE_VERSION_MASK; - version1 = clib_net_to_host_u16 (h1->flags_and_version); - verr1 = version1 & GRE_VERSION_MASK; - - b0->error = verr0 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] - : b0->error; - next0 = verr0 ? GRE_INPUT_NEXT_DROP : next0; - b1->error = verr1 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] - : b1->error; - next1 = verr1 ? GRE_INPUT_NEXT_DROP : next1; - - - /* RPF check for ip4/ip6 input */ - if (PREDICT_TRUE(next0 == GRE_INPUT_NEXT_IP4_INPUT - || next0 == GRE_INPUT_NEXT_IP6_INPUT - || next0 == GRE_INPUT_NEXT_ETHERNET_INPUT - || next0 == GRE_INPUT_NEXT_MPLS_INPUT)) - { - - u64 key4, key6[4]; - if (!is_ipv6) - { - key4 = ((u64)(ip4_tun_dst0) << 32) | (u64)(ip4_tun_src0); - } - else - { - key6[0] = ip6_tun_dst0[0]; - key6[1] = ip6_tun_dst0[1]; - key6[2] = ip6_tun_src0[0]; - key6[3] = ip6_tun_src0[1]; - } - - if ((!is_ipv6 && cached_tunnel_key4 != key4) || - (is_ipv6 && cached_tunnel_key6[0] != key6[0] && - cached_tunnel_key6[1] != key6[1] && - cached_tunnel_key6[2] != key6[2] && - cached_tunnel_key6[3] != key6[3])) - { - vnet_hw_interface_t * hi; - gre_tunnel_t * t; - uword * p; - - if (!is_ipv6) - p = hash_get (gm->tunnel_by_key4, key4); - else - p = hash_get_mem (gm->tunnel_by_key6, key6); - if (!p) - { - next0 = GRE_INPUT_NEXT_DROP; - b0->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; - goto drop0; - } - t = pool_elt_at_index (gm->tunnels, p[0]); - hi = vnet_get_hw_interface (gm->vnet_main, - t->hw_if_index); - tunnel_sw_if_index = hi->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - } - else - { - tunnel_sw_if_index = cached_tunnel_sw_if_index; - } - } - else - { - next0 = GRE_INPUT_NEXT_DROP; - goto drop0; - } - len = vlib_buffer_length_in_chain (vm, b0); - vlib_increment_combined_counter (im->combined_sw_if_counters - + VNET_INTERFACE_COUNTER_RX, - thread_index, - tunnel_sw_if_index, - 1 /* packets */, - len /* bytes */); - - vnet_buffer(b0)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; - -drop0: - if (PREDICT_TRUE(next1 == GRE_INPUT_NEXT_IP4_INPUT - || next1 == GRE_INPUT_NEXT_IP6_INPUT - || next1 == GRE_INPUT_NEXT_ETHERNET_INPUT - || next1 == GRE_INPUT_NEXT_MPLS_INPUT)) - { - u64 key4, key6[4]; - if (!is_ipv6) - { - key4 = ((u64)(ip4_tun_dst1) << 32) | (u64)(ip4_tun_src1); - } - else - { - key6[0] = ip6_tun_dst1[0]; - key6[1] = ip6_tun_dst1[1]; - key6[2] = ip6_tun_src1[0]; - key6[3] = ip6_tun_src1[1]; - } - - if ((!is_ipv6 && cached_tunnel_key4 != key4) || - (is_ipv6 && cached_tunnel_key6[0] != key6[0] && - cached_tunnel_key6[1] != key6[1] && - cached_tunnel_key6[2] != key6[2] && - cached_tunnel_key6[3] != key6[3])) - { - vnet_hw_interface_t * hi; - gre_tunnel_t * t; - uword * p; - - if (!is_ipv6) - p = hash_get (gm->tunnel_by_key4, key4); - else - p = hash_get_mem (gm->tunnel_by_key6, key6); - - if (!p) - { - next1 = GRE_INPUT_NEXT_DROP; - b1->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; - goto drop1; - } - t = pool_elt_at_index (gm->tunnels, p[0]); - hi = vnet_get_hw_interface (gm->vnet_main, - t->hw_if_index); - tunnel_sw_if_index = hi->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - } - else - { - tunnel_sw_if_index = cached_tunnel_sw_if_index; - } - } - else - { - next1 = GRE_INPUT_NEXT_DROP; - goto drop1; - } - len = vlib_buffer_length_in_chain (vm, b1); - vlib_increment_combined_counter (im->combined_sw_if_counters - + VNET_INTERFACE_COUNTER_RX, - thread_index, - tunnel_sw_if_index, - 1 /* packets */, - len /* bytes */); - - vnet_buffer(b1)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; - -drop1: - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_rx_trace_t *tr = vlib_add_trace (vm, node, - b0, sizeof (*tr)); - tr->tunnel_id = tunnel_sw_if_index; - if (!is_ipv6) - { - tr->length = ip4_0->length; - tr->src.ip4.as_u32 = ip4_0->src_address.as_u32; - tr->dst.ip4.as_u32 = ip4_0->dst_address.as_u32; - } - else - { - tr->length = ip6_0->payload_length; - tr->src.ip6.as_u64[0] = ip6_0->src_address.as_u64[0]; - tr->src.ip6.as_u64[1] = ip6_0->src_address.as_u64[1]; - tr->dst.ip6.as_u64[0] = ip6_0->dst_address.as_u64[0]; - tr->dst.ip6.as_u64[1] = ip6_0->dst_address.as_u64[1]; - } - } - - if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_rx_trace_t *tr = vlib_add_trace (vm, node, - b1, sizeof (*tr)); - tr->tunnel_id = tunnel_sw_if_index; - if (!is_ipv6) - { - tr->length = ip4_1->length; - tr->src.ip4.as_u32 = ip4_1->src_address.as_u32; - tr->dst.ip4.as_u32 = ip4_1->dst_address.as_u32; - } - else - { - tr->length = ip6_1->payload_length; - tr->src.ip6.as_u64[0] = ip6_1->src_address.as_u64[0]; - tr->src.ip6.as_u64[1] = ip6_1->src_address.as_u64[1]; - tr->dst.ip6.as_u64[0] = ip6_1->dst_address.as_u64[0]; - tr->dst.ip6.as_u64[1] = ip6_1->dst_address.as_u64[1]; - } - } - - vlib_buffer_advance (b0, sizeof (*h0)); - vlib_buffer_advance (b1, sizeof (*h1)); + &i0, &i1); + next0 = vec_elt (gm->next_by_protocol, i0); + next1 = vec_elt (gm->next_by_protocol, i1); + + b0->error = + node->errors[i0 == + SPARSE_VEC_INVALID_INDEX ? GRE_ERROR_UNKNOWN_PROTOCOL + : GRE_ERROR_NONE]; + b1->error = + node->errors[i1 == + SPARSE_VEC_INVALID_INDEX ? GRE_ERROR_UNKNOWN_PROTOCOL + : GRE_ERROR_NONE]; + + version0 = clib_net_to_host_u16 (h0->flags_and_version); + verr0 = version0 & GRE_VERSION_MASK; + version1 = clib_net_to_host_u16 (h1->flags_and_version); + verr1 = version1 & GRE_VERSION_MASK; + + b0->error = verr0 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] + : b0->error; + next0 = verr0 ? GRE_INPUT_NEXT_DROP : next0; + b1->error = verr1 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] + : b1->error; + next1 = verr1 ? GRE_INPUT_NEXT_DROP : next1; + + + /* RPF check for ip4/ip6 input */ + if (PREDICT_TRUE (next0 == GRE_INPUT_NEXT_IP4_INPUT + || next0 == GRE_INPUT_NEXT_IP6_INPUT + || next0 == GRE_INPUT_NEXT_ETHERNET_INPUT + || next0 == GRE_INPUT_NEXT_MPLS_INPUT)) + { + + u64 key4, key6[4]; + if (!is_ipv6) + { + key4 = ((u64) (ip4_tun_dst0) << 32) | (u64) (ip4_tun_src0); + } + else + { + key6[0] = ip6_tun_dst0[0]; + key6[1] = ip6_tun_dst0[1]; + key6[2] = ip6_tun_src0[0]; + key6[3] = ip6_tun_src0[1]; + } + + if ((!is_ipv6 && cached_tunnel_key4 != key4) || + (is_ipv6 && cached_tunnel_key6[0] != key6[0] && + cached_tunnel_key6[1] != key6[1] && + cached_tunnel_key6[2] != key6[2] && + cached_tunnel_key6[3] != key6[3])) + { + vnet_hw_interface_t *hi; + gre_tunnel_t *t; + uword *p; + + if (!is_ipv6) + p = hash_get (gm->tunnel_by_key4, key4); + else + p = hash_get_mem (gm->tunnel_by_key6, key6); + if (!p) + { + next0 = GRE_INPUT_NEXT_DROP; + b0->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; + goto drop0; + } + t = pool_elt_at_index (gm->tunnels, p[0]); + hi = vnet_get_hw_interface (gm->vnet_main, t->hw_if_index); + tunnel_sw_if_index = hi->sw_if_index; + + cached_tunnel_sw_if_index = tunnel_sw_if_index; + } + else + { + tunnel_sw_if_index = cached_tunnel_sw_if_index; + } + } + else + { + next0 = GRE_INPUT_NEXT_DROP; + goto drop0; + } + len = vlib_buffer_length_in_chain (vm, b0); + vlib_increment_combined_counter (im->combined_sw_if_counters + + VNET_INTERFACE_COUNTER_RX, + thread_index, + tunnel_sw_if_index, + 1 /* packets */ , + len /* bytes */ ); + + vnet_buffer (b0)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; + + drop0: + if (PREDICT_TRUE (next1 == GRE_INPUT_NEXT_IP4_INPUT + || next1 == GRE_INPUT_NEXT_IP6_INPUT + || next1 == GRE_INPUT_NEXT_ETHERNET_INPUT + || next1 == GRE_INPUT_NEXT_MPLS_INPUT)) + { + u64 key4, key6[4]; + if (!is_ipv6) + { + key4 = ((u64) (ip4_tun_dst1) << 32) | (u64) (ip4_tun_src1); + } + else + { + key6[0] = ip6_tun_dst1[0]; + key6[1] = ip6_tun_dst1[1]; + key6[2] = ip6_tun_src1[0]; + key6[3] = ip6_tun_src1[1]; + } + + if ((!is_ipv6 && cached_tunnel_key4 != key4) || + (is_ipv6 && cached_tunnel_key6[0] != key6[0] && + cached_tunnel_key6[1] != key6[1] && + cached_tunnel_key6[2] != key6[2] && + cached_tunnel_key6[3] != key6[3])) + { + vnet_hw_interface_t *hi; + gre_tunnel_t *t; + uword *p; + + if (!is_ipv6) + p = hash_get (gm->tunnel_by_key4, key4); + else + p = hash_get_mem (gm->tunnel_by_key6, key6); + + if (!p) + { + next1 = GRE_INPUT_NEXT_DROP; + b1->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; + goto drop1; + } + t = pool_elt_at_index (gm->tunnels, p[0]); + hi = vnet_get_hw_interface (gm->vnet_main, t->hw_if_index); + tunnel_sw_if_index = hi->sw_if_index; + + cached_tunnel_sw_if_index = tunnel_sw_if_index; + } + else + { + tunnel_sw_if_index = cached_tunnel_sw_if_index; + } + } + else + { + next1 = GRE_INPUT_NEXT_DROP; + goto drop1; + } + len = vlib_buffer_length_in_chain (vm, b1); + vlib_increment_combined_counter (im->combined_sw_if_counters + + VNET_INTERFACE_COUNTER_RX, + thread_index, + tunnel_sw_if_index, + 1 /* packets */ , + len /* bytes */ ); + + vnet_buffer (b1)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; + + drop1: + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + gre_rx_trace_t *tr = vlib_add_trace (vm, node, + b0, sizeof (*tr)); + tr->tunnel_id = tunnel_sw_if_index; + if (!is_ipv6) + { + tr->length = ip4_0->length; + tr->src.ip4.as_u32 = ip4_0->src_address.as_u32; + tr->dst.ip4.as_u32 = ip4_0->dst_address.as_u32; + } + else + { + tr->length = ip6_0->payload_length; + tr->src.ip6.as_u64[0] = ip6_0->src_address.as_u64[0]; + tr->src.ip6.as_u64[1] = ip6_0->src_address.as_u64[1]; + tr->dst.ip6.as_u64[0] = ip6_0->dst_address.as_u64[0]; + tr->dst.ip6.as_u64[1] = ip6_0->dst_address.as_u64[1]; + } + } + + if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) + { + gre_rx_trace_t *tr = vlib_add_trace (vm, node, + b1, sizeof (*tr)); + tr->tunnel_id = tunnel_sw_if_index; + if (!is_ipv6) + { + tr->length = ip4_1->length; + tr->src.ip4.as_u32 = ip4_1->src_address.as_u32; + tr->dst.ip4.as_u32 = ip4_1->dst_address.as_u32; + } + else + { + tr->length = ip6_1->payload_length; + tr->src.ip6.as_u64[0] = ip6_1->src_address.as_u64[0]; + tr->src.ip6.as_u64[1] = ip6_1->src_address.as_u64[1]; + tr->dst.ip6.as_u64[0] = ip6_1->dst_address.as_u64[0]; + tr->dst.ip6.as_u64[1] = ip6_1->dst_address.as_u64[1]; + } + } + + vlib_buffer_advance (b0, sizeof (*h0)); + vlib_buffer_advance (b1, sizeof (*h1)); vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, @@ -385,15 +390,15 @@ drop1: while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0; - vlib_buffer_t * b0; - gre_header_t * h0; - ip4_header_t * ip4_0; - ip6_header_t * ip6_0; - u16 version0; - int verr0; + vlib_buffer_t *b0; + gre_header_t *h0; + ip4_header_t *ip4_0; + ip6_header_t *ip6_0; + u16 version0; + int verr0; u32 i0, next0; - u32 ip4_tun_src0, ip4_tun_dst0; - u32 ip6_tun_src0[4], ip6_tun_dst0[4]; + u32 ip4_tun_src0, ip4_tun_dst0; + u32 ip6_tun_src0[4], ip6_tun_dst0[4]; bi0 = from[0]; to_next[0] = bi0; @@ -403,135 +408,134 @@ drop1: n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); - ip4_0 = vlib_buffer_get_current (b0); - ip6_0 = (void *)ip4_0; - - if (!is_ipv6) - { - ip4_tun_src0 = ip4_0->src_address.as_u32; - ip4_tun_dst0 = ip4_0->dst_address.as_u32; - - vlib_buffer_advance (b0, sizeof (*ip4_0)); - } - else - { - ip6_tun_src0[0] = ip6_0->src_address.as_u64[0]; - ip6_tun_src0[1] = ip6_0->src_address.as_u64[1]; - ip6_tun_dst0[0] = ip6_0->dst_address.as_u64[0]; - ip6_tun_dst0[1] = ip6_0->dst_address.as_u64[1]; - - vlib_buffer_advance (b0, sizeof (*ip6_0)); - } + ip4_0 = vlib_buffer_get_current (b0); + ip6_0 = (void *) ip4_0; + + if (!is_ipv6) + { + ip4_tun_src0 = ip4_0->src_address.as_u32; + ip4_tun_dst0 = ip4_0->dst_address.as_u32; + + vlib_buffer_advance (b0, sizeof (*ip4_0)); + } + else + { + ip6_tun_src0[0] = ip6_0->src_address.as_u64[0]; + ip6_tun_src0[1] = ip6_0->src_address.as_u64[1]; + ip6_tun_dst0[0] = ip6_0->dst_address.as_u64[0]; + ip6_tun_dst0[1] = ip6_0->dst_address.as_u64[1]; + + vlib_buffer_advance (b0, sizeof (*ip6_0)); + } h0 = vlib_buffer_get_current (b0); i0 = sparse_vec_index (gm->next_by_protocol, h0->protocol); - next0 = vec_elt(gm->next_by_protocol, i0); + next0 = vec_elt (gm->next_by_protocol, i0); b0->error = - node->errors[i0 == SPARSE_VEC_INVALID_INDEX - ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE]; - - version0 = clib_net_to_host_u16 (h0->flags_and_version); - verr0 = version0 & GRE_VERSION_MASK; - b0->error = verr0 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] - : b0->error; - next0 = verr0 ? GRE_INPUT_NEXT_DROP : next0; - - - /* For IP payload we need to find source interface - so we can increase counters and help forward node to - pick right FIB */ - /* RPF check for ip4/ip6 input */ - if (PREDICT_TRUE(next0 == GRE_INPUT_NEXT_IP4_INPUT - || next0 == GRE_INPUT_NEXT_IP6_INPUT - || next0 == GRE_INPUT_NEXT_ETHERNET_INPUT - || next0 == GRE_INPUT_NEXT_MPLS_INPUT)) - { - u64 key4, key6[4]; - if (!is_ipv6) - { - key4 = ((u64)(ip4_tun_dst0) << 32) | (u64)(ip4_tun_src0); - } - else - { - key6[0] = ip6_tun_dst0[0]; - key6[1] = ip6_tun_dst0[1]; - key6[2] = ip6_tun_src0[0]; - key6[3] = ip6_tun_src0[1]; - } - - if ((!is_ipv6 && cached_tunnel_key4 != key4) || - (is_ipv6 && cached_tunnel_key6[0] != key6[0] && - cached_tunnel_key6[1] != key6[1] && - cached_tunnel_key6[2] != key6[2] && - cached_tunnel_key6[3] != key6[3])) - { - vnet_hw_interface_t * hi; - gre_tunnel_t * t; - uword * p; - - if (!is_ipv6) - p = hash_get (gm->tunnel_by_key4, key4); - else - p = hash_get_mem (gm->tunnel_by_key6, key6); - - if (!p) - { - next0 = GRE_INPUT_NEXT_DROP; - b0->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; - goto drop; - } - t = pool_elt_at_index (gm->tunnels, p[0]); - hi = vnet_get_hw_interface (gm->vnet_main, - t->hw_if_index); - tunnel_sw_if_index = hi->sw_if_index; - - cached_tunnel_sw_if_index = tunnel_sw_if_index; - } - else - { - tunnel_sw_if_index = cached_tunnel_sw_if_index; - } - } - else - { - next0 = GRE_INPUT_NEXT_DROP; - goto drop; - } - len = vlib_buffer_length_in_chain (vm, b0); - vlib_increment_combined_counter (im->combined_sw_if_counters - + VNET_INTERFACE_COUNTER_RX, - thread_index, - tunnel_sw_if_index, - 1 /* packets */, - len /* bytes */); - - vnet_buffer(b0)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; - -drop: - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - gre_rx_trace_t *tr = vlib_add_trace (vm, node, - b0, sizeof (*tr)); - tr->tunnel_id = tunnel_sw_if_index; - if (!is_ipv6) - { - tr->length = ip4_0->length; - tr->src.ip4.as_u32 = ip4_0->src_address.as_u32; - tr->dst.ip4.as_u32 = ip4_0->dst_address.as_u32; - } - else - { - tr->length = ip6_0->payload_length; - tr->src.ip6.as_u64[0] = ip6_0->src_address.as_u64[0]; - tr->src.ip6.as_u64[1] = ip6_0->src_address.as_u64[1]; - tr->dst.ip6.as_u64[0] = ip6_0->dst_address.as_u64[0]; - tr->dst.ip6.as_u64[1] = ip6_0->dst_address.as_u64[1]; - } - } - - vlib_buffer_advance (b0, sizeof (*h0)); + node->errors[i0 == SPARSE_VEC_INVALID_INDEX + ? GRE_ERROR_UNKNOWN_PROTOCOL : GRE_ERROR_NONE]; + + version0 = clib_net_to_host_u16 (h0->flags_and_version); + verr0 = version0 & GRE_VERSION_MASK; + b0->error = verr0 ? node->errors[GRE_ERROR_UNSUPPORTED_VERSION] + : b0->error; + next0 = verr0 ? GRE_INPUT_NEXT_DROP : next0; + + + /* For IP payload we need to find source interface + so we can increase counters and help forward node to + pick right FIB */ + /* RPF check for ip4/ip6 input */ + if (PREDICT_TRUE (next0 == GRE_INPUT_NEXT_IP4_INPUT + || next0 == GRE_INPUT_NEXT_IP6_INPUT + || next0 == GRE_INPUT_NEXT_ETHERNET_INPUT + || next0 == GRE_INPUT_NEXT_MPLS_INPUT)) + { + u64 key4, key6[4]; + if (!is_ipv6) + { + key4 = ((u64) (ip4_tun_dst0) << 32) | (u64) (ip4_tun_src0); + } + else + { + key6[0] = ip6_tun_dst0[0]; + key6[1] = ip6_tun_dst0[1]; + key6[2] = ip6_tun_src0[0]; + key6[3] = ip6_tun_src0[1]; + } + + if ((!is_ipv6 && cached_tunnel_key4 != key4) || + (is_ipv6 && cached_tunnel_key6[0] != key6[0] && + cached_tunnel_key6[1] != key6[1] && + cached_tunnel_key6[2] != key6[2] && + cached_tunnel_key6[3] != key6[3])) + { + vnet_hw_interface_t *hi; + gre_tunnel_t *t; + uword *p; + + if (!is_ipv6) + p = hash_get (gm->tunnel_by_key4, key4); + else + p = hash_get_mem (gm->tunnel_by_key6, key6); + + if (!p) + { + next0 = GRE_INPUT_NEXT_DROP; + b0->error = node->errors[GRE_ERROR_NO_SUCH_TUNNEL]; + goto drop; + } + t = pool_elt_at_index (gm->tunnels, p[0]); + hi = vnet_get_hw_interface (gm->vnet_main, t->hw_if_index); + tunnel_sw_if_index = hi->sw_if_index; + + cached_tunnel_sw_if_index = tunnel_sw_if_index; + } + else + { + tunnel_sw_if_index = cached_tunnel_sw_if_index; + } + } + else + { + next0 = GRE_INPUT_NEXT_DROP; + goto drop; + } + len = vlib_buffer_length_in_chain (vm, b0); + vlib_increment_combined_counter (im->combined_sw_if_counters + + VNET_INTERFACE_COUNTER_RX, + thread_index, + tunnel_sw_if_index, + 1 /* packets */ , + len /* bytes */ ); + + vnet_buffer (b0)->sw_if_index[VLIB_RX] = tunnel_sw_if_index; + + drop: + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + gre_rx_trace_t *tr = vlib_add_trace (vm, node, + b0, sizeof (*tr)); + tr->tunnel_id = tunnel_sw_if_index; + if (!is_ipv6) + { + tr->length = ip4_0->length; + tr->src.ip4.as_u32 = ip4_0->src_address.as_u32; + tr->dst.ip4.as_u32 = ip4_0->dst_address.as_u32; + } + else + { + tr->length = ip6_0->payload_length; + tr->src.ip6.as_u64[0] = ip6_0->src_address.as_u64[0]; + tr->src.ip6.as_u64[1] = ip6_0->src_address.as_u64[1]; + tr->dst.ip6.as_u64[0] = ip6_0->dst_address.as_u64[0]; + tr->dst.ip6.as_u64[1] = ip6_0->dst_address.as_u64[1]; + } + } + + vlib_buffer_advance (b0, sizeof (*h0)); vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, @@ -540,33 +544,34 @@ drop: vlib_put_next_frame (vm, node, next_index, n_left_to_next); } - vlib_node_increment_counter (vm, !is_ipv6 ? gre4_input_node.index : gre6_input_node.index, - GRE_ERROR_PKTS_DECAP, from_frame->n_vectors); + vlib_node_increment_counter (vm, + !is_ipv6 ? gre4_input_node.index : + gre6_input_node.index, GRE_ERROR_PKTS_DECAP, + from_frame->n_vectors); return from_frame->n_vectors; } static uword gre4_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) + vlib_node_runtime_t * node, vlib_frame_t * from_frame) { - return gre_input(vm, node, from_frame, /* is_ip6 */ 0); + return gre_input (vm, node, from_frame, /* is_ip6 */ 0); } static uword gre6_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) + vlib_node_runtime_t * node, vlib_frame_t * from_frame) { - return gre_input(vm, node, from_frame, /* is_ip6 */ 1); + return gre_input (vm, node, from_frame, /* is_ip6 */ 1); } -static char * gre_error_strings[] = { +static char *gre_error_strings[] = { #define gre_error(n,s) s, #include "error.def" #undef gre_error }; +/* *INDENT-OFF* */ VLIB_REGISTER_NODE (gre4_input_node) = { .function = gre4_input, .name = "gre4-input", @@ -587,7 +592,9 @@ VLIB_REGISTER_NODE (gre4_input_node) = { .format_trace = format_gre_rx_trace, .unformat_buffer = unformat_gre_header, }; +/* *INDENT-ON* */ +/* *INDENT-OFF* */ VLIB_REGISTER_NODE (gre6_input_node) = { .function = gre6_input, .name = "gre6-input", @@ -610,22 +617,21 @@ VLIB_REGISTER_NODE (gre6_input_node) = { .format_trace = format_gre_rx_trace, .unformat_buffer = unformat_gre_header, }; +/* *INDENT-ON* */ VLIB_NODE_FUNCTION_MULTIARCH (gre4_input_node, gre4_input) VLIB_NODE_FUNCTION_MULTIARCH (gre6_input_node, gre6_input) - -void -gre_register_input_protocol (vlib_main_t * vm, - gre_protocol_t protocol, - u32 node_index) + void + gre_register_input_protocol (vlib_main_t * vm, + gre_protocol_t protocol, u32 node_index) { - gre_main_t * em = &gre_main; - gre_protocol_info_t * pi; - u16 * n; + gre_main_t *em = &gre_main; + gre_protocol_info_t *pi; + u16 *n; u32 i; { - clib_error_t * error = vlib_call_init_function (vm, gre_input_init); + clib_error_t *error = vlib_call_init_function (vm, gre_input_init); if (error) clib_error_report (error); } @@ -634,32 +640,33 @@ gre_register_input_protocol (vlib_main_t * vm, pi->node_index = node_index; pi->next_index = vlib_node_add_next (vm, gre4_input_node.index, node_index); i = vlib_node_add_next (vm, gre6_input_node.index, node_index); - ASSERT(i == pi->next_index); + ASSERT (i == pi->next_index); /* Setup gre protocol -> next index sparse vector mapping. */ n = sparse_vec_validate (em->next_by_protocol, - clib_host_to_net_u16 (protocol)); + clib_host_to_net_u16 (protocol)); n[0] = pi->next_index; } static void gre_setup_node (vlib_main_t * vm, u32 node_index) { - vlib_node_t * n = vlib_get_node (vm, node_index); - pg_node_t * pn = pg_get_node (node_index); + vlib_node_t *n = vlib_get_node (vm, node_index); + pg_node_t *pn = pg_get_node (node_index); n->format_buffer = format_gre_header_with_length; n->unformat_buffer = unformat_gre_header; pn->unformat_edit = unformat_pg_gre_header; } -static clib_error_t * gre_input_init (vlib_main_t * vm) +static clib_error_t * +gre_input_init (vlib_main_t * vm) { - gre_main_t * gm = &gre_main; + gre_main_t *gm = &gre_main; vlib_node_t *ethernet_input, *ip4_input, *ip6_input, *mpls_unicast_input; { - clib_error_t * error; + clib_error_t *error; error = vlib_call_init_function (vm, gre_init); if (error) clib_error_report (error); @@ -669,30 +676,27 @@ static clib_error_t * gre_input_init (vlib_main_t * vm) gre_setup_node (vm, gre6_input_node.index); gm->next_by_protocol = sparse_vec_new - (/* elt bytes */ sizeof (gm->next_by_protocol[0]), + ( /* elt bytes */ sizeof (gm->next_by_protocol[0]), /* bits in index */ BITS (((gre_header_t *) 0)->protocol)); /* These could be moved to the supported protocol input node defn's */ - ethernet_input = vlib_get_node_by_name (vm, (u8 *)"ethernet-input"); - ASSERT(ethernet_input); - ip4_input = vlib_get_node_by_name (vm, (u8 *)"ip4-input"); - ASSERT(ip4_input); - ip6_input = vlib_get_node_by_name (vm, (u8 *)"ip6-input"); - ASSERT(ip6_input); - mpls_unicast_input = vlib_get_node_by_name (vm, (u8 *)"mpls-input"); - ASSERT(mpls_unicast_input); + ethernet_input = vlib_get_node_by_name (vm, (u8 *) "ethernet-input"); + ASSERT (ethernet_input); + ip4_input = vlib_get_node_by_name (vm, (u8 *) "ip4-input"); + ASSERT (ip4_input); + ip6_input = vlib_get_node_by_name (vm, (u8 *) "ip6-input"); + ASSERT (ip6_input); + mpls_unicast_input = vlib_get_node_by_name (vm, (u8 *) "mpls-input"); + ASSERT (mpls_unicast_input); - gre_register_input_protocol (vm, GRE_PROTOCOL_teb, - ethernet_input->index); + gre_register_input_protocol (vm, GRE_PROTOCOL_teb, ethernet_input->index); - gre_register_input_protocol (vm, GRE_PROTOCOL_ip4, - ip4_input->index); + gre_register_input_protocol (vm, GRE_PROTOCOL_ip4, ip4_input->index); - gre_register_input_protocol (vm, GRE_PROTOCOL_ip6, - ip6_input->index); + gre_register_input_protocol (vm, GRE_PROTOCOL_ip6, ip6_input->index); gre_register_input_protocol (vm, GRE_PROTOCOL_mpls_unicast, - mpls_unicast_input->index); + mpls_unicast_input->index); ip4_register_protocol (IP_PROTOCOL_GRE, gre4_input_node.index); ip6_register_protocol (IP_PROTOCOL_GRE, gre6_input_node.index); @@ -701,3 +705,11 @@ static clib_error_t * gre_input_init (vlib_main_t * vm) } VLIB_INIT_FUNCTION (gre_input_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |