From 734ec5ec13499a2e7112626564cc9bd0c2d06600 Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Mon, 26 Mar 2012 12:56:14 -0700 Subject: [PATCH] packet: Add additional TCP flags extraction on IPv6. Commit 11460e2316b88f0bd0ea0005d94338d800ea16bd (flow: Enable retrieval of TCP flags from IPv6 traffic.) updated one of the TCP flags extraction functions in userspace but missed the other. This updates that function and converts the other to use it to reduce duplication. Bug #10194 Signed-off-by: Jesse Gross --- lib/dpif-netdev.c | 13 ++++--------- lib/packets.c | 6 +++--- 2 files changed, 7 insertions(+), 12 deletions(-) diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c index a38e56bb..8381a897 100644 --- a/lib/dpif-netdev.c +++ b/lib/dpif-netdev.c @@ -113,7 +113,7 @@ struct dp_netdev_flow { long long int used; /* Last used time, in monotonic msecs. */ long long int packet_count; /* Number of packets matched. */ long long int byte_count; /* Number of bytes matched. */ - ovs_be16 tcp_ctl; /* Bitwise-OR of seen tcp_ctl values. */ + ovs_be16 tcp_flags; /* Bitwise-OR of seen tcp_flags values. */ /* Actions. */ struct nlattr *actions; @@ -627,7 +627,7 @@ get_dpif_flow_stats(struct dp_netdev_flow *flow, struct dpif_flow_stats *stats) stats->n_packets = flow->packet_count; stats->n_bytes = flow->byte_count; stats->used = flow->used; - stats->tcp_flags = TCP_FLAGS(flow->tcp_ctl); + stats->tcp_flags = flow->tcp_flags; } static int @@ -728,7 +728,7 @@ clear_stats(struct dp_netdev_flow *flow) flow->used = 0; flow->packet_count = 0; flow->byte_count = 0; - flow->tcp_ctl = 0; + flow->tcp_flags = 0; } static int @@ -976,12 +976,7 @@ dp_netdev_flow_used(struct dp_netdev_flow *flow, struct flow *key, flow->used = time_msec(); flow->packet_count++; flow->byte_count += packet->size; - if ((key->dl_type == htons(ETH_TYPE_IP) || - key->dl_type == htons(ETH_TYPE_IPV6)) && - key->nw_proto == IPPROTO_TCP && packet->l7) { - struct tcp_header *th = packet->l4; - flow->tcp_ctl |= th->tcp_ctl; - } + flow->tcp_flags |= packet_get_tcp_flags(packet, key); } static void diff --git a/lib/packets.c b/lib/packets.c index 9d861dab..8fb7f6b0 100644 --- a/lib/packets.c +++ b/lib/packets.c @@ -487,9 +487,9 @@ packet_set_udp_port(struct ofpbuf *packet, ovs_be16 src, ovs_be16 dst) uint8_t packet_get_tcp_flags(const struct ofpbuf *packet, const struct flow *flow) { - /* XXX IPv6? */ - if (flow->dl_type == htons(ETH_TYPE_IP) && packet->l4 - && flow->nw_proto == IPPROTO_TCP && packet->l7) { + if ((flow->dl_type == htons(ETH_TYPE_IP) || + flow->dl_type == htons(ETH_TYPE_IPV6)) && + flow->nw_proto == IPPROTO_TCP && packet->l7) { const struct tcp_header *tcp = packet->l4; return TCP_FLAGS(tcp->tcp_ctl); } else { -- 2.30.2