diff options
Diffstat (limited to 'ring_rx.c')
| -rw-r--r-- | ring_rx.c | 53 |
1 files changed, 41 insertions, 12 deletions
@@ -21,6 +21,10 @@ #include "ring_rx.h" #include "built_in.h" +/* + * tpacket v3 data structures and constants are not available for older kernel + * versions which only support tpacket v2, thus we need protect access to them. + */ #ifdef HAVE_TPACKET3 static inline bool is_tpacket_v3(int sock) { @@ -54,6 +58,24 @@ static inline size_t rx_ring_get_size(struct ring *ring, bool v3) { return v3 ? ring->layout3.tp_block_size : ring->layout.tp_frame_size; } + +static int get_rx_net_stats(int sock, uint64_t *packets, uint64_t *drops, bool v3) +{ + int ret; + union { + struct tpacket_stats k2; + struct tpacket_stats_v3 k3; + } stats; + socklen_t slen = v3 ? sizeof(stats.k3) : sizeof(stats.k2); + + memset(&stats, 0, sizeof(stats)); + ret = getsockopt(sock, SOL_PACKET, PACKET_STATISTICS, &stats, &slen); + if (ret == 0) { + *packets = stats.k3.tp_packets; + *drops = stats.k3.tp_drops; + } + return ret; +} #else static inline bool is_tpacket_v3(int sock __maybe_unused) { @@ -78,6 +100,21 @@ static inline size_t rx_ring_get_size(struct ring *ring, bool v3 __maybe_unused) { return ring->layout.tp_frame_size; } + +static int get_rx_net_stats(int sock, uint64_t *packets, uint64_t *drops, bool v3 __maybe_unused) +{ + int ret; + struct tpacket_stats stats; + socklen_t slen = sizeof(stats); + + memset(&stats, 0, sizeof(stats)); + ret = getsockopt(sock, SOL_PACKET, PACKET_STATISTICS, &stats, &slen); + if (ret == 0) { + *packets = stats.tp_packets; + *drops = stats.tp_drops; + } + return ret; +} #endif /* HAVE_TPACKET3 */ void destroy_rx_ring(int sock, struct ring *ring) @@ -188,24 +225,16 @@ void ring_rx_setup(struct ring *ring, int sock, size_t size, int ifindex, void sock_rx_net_stats(int sock, unsigned long seen) { int ret; + uint64_t packets, drops; bool v3 = is_tpacket_v3(sock); - union { - struct tpacket_stats k2; - struct tpacket_stats_v3 k3; - } stats; - socklen_t slen = v3 ? sizeof(stats.k3) : sizeof(stats.k2); - - memset(&stats, 0, sizeof(stats)); - ret = getsockopt(sock, SOL_PACKET, PACKET_STATISTICS, &stats, &slen); - if (ret > -1) { - uint64_t packets = stats.k3.tp_packets; - uint64_t drops = stats.k3.tp_drops; + ret = get_rx_net_stats(sock, &packets, &drops, v3); + if (ret == 0) { printf("\r%12"PRIu64" packets incoming (%"PRIu64" unread on exit)\n", v3 ? (uint64_t)seen : packets, v3 ? packets - seen : 0); printf("\r%12"PRIu64" packets passed filter\n", packets - drops); printf("\r%12"PRIu64" packets failed filter (out of space)\n", drops); - if (stats.k3.tp_packets > 0) + if (packets > 0) printf("\r%12.4lf%% packet droprate\n", (1.0 * drops / packets) * 100.0); } |