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Diffstat (limited to 'netsniff-ng.c')
-rw-r--r--netsniff-ng.c118
1 files changed, 73 insertions, 45 deletions
diff --git a/netsniff-ng.c b/netsniff-ng.c
index 57edc43..3b69c8f 100644
--- a/netsniff-ng.c
+++ b/netsniff-ng.c
@@ -22,6 +22,7 @@
#include <stdbool.h>
#include <pthread.h>
#include <fcntl.h>
+#include <inttypes.h>
#include "ring_rx.h"
#include "ring_tx.h"
@@ -64,6 +65,8 @@ struct ctx {
gid_t gid;
uint32_t link_type, magic;
uint32_t fanout_group, fanout_type;
+ uint64_t pkts_seen, pkts_recvd, pkts_drops;
+ uint64_t pkts_recvd_last, pkts_drops_last;
};
static volatile sig_atomic_t sigint = 0, sighup = 0;
@@ -203,6 +206,41 @@ static inline void setup_rfmon_mac80211_dev(struct ctx *ctx, char **rfmon_dev)
panic_handler_add(on_panic_del_rfmon, *rfmon_dev);
}
+static int update_rx_stats(struct ctx *ctx, int sock, bool is_v3)
+{
+ uint64_t packets, drops;
+ int ret;
+
+ ret = get_rx_net_stats(sock, &packets, &drops, is_v3);
+ if (ret)
+ return ret;
+
+ ctx->pkts_recvd += packets;
+ ctx->pkts_drops += drops;
+ ctx->pkts_recvd_last = packets;
+ ctx->pkts_drops_last = drops;
+
+ return 0;
+}
+
+static void dump_rx_stats(struct ctx *ctx, int sock, bool is_v3)
+{
+ if (update_rx_stats(ctx, sock, is_v3))
+ return;
+
+ printf("\r%12"PRIu64" packets incoming (%"PRIu64" unread on exit)\n",
+ is_v3 ? ctx->pkts_seen : ctx->pkts_recvd,
+ is_v3 ? ctx->pkts_recvd - ctx->pkts_seen : 0);
+ printf("\r%12"PRIu64" packets passed filter\n",
+ ctx->pkts_recvd - ctx->pkts_drops);
+ printf("\r%12"PRIu64" packets failed filter (out of space)\n",
+ ctx->pkts_drops);
+
+ if (ctx->pkts_recvd > 0)
+ printf("\r%12.4lf%% packet droprate\n",
+ (1.0 * ctx->pkts_drops / ctx->pkts_recvd) * 100.0);
+}
+
static void pcap_to_xmit(struct ctx *ctx)
{
uint8_t *out = NULL;
@@ -376,7 +414,6 @@ static void receive_to_xmit(struct ctx *ctx)
int rx_sock, ifindex_in, ifindex_out, ret;
size_t size_in, size_out;
unsigned int it_in = 0, it_out = 0;
- unsigned long frame_count = 0;
struct frame_map *hdr_in, *hdr_out;
struct ring tx_ring, rx_ring;
struct pollfd rx_poll;
@@ -428,7 +465,7 @@ static void receive_to_xmit(struct ctx *ctx)
hdr_in = rx_ring.frames[it_in].iov_base;
in = ((uint8_t *) hdr_in) + hdr_in->tp_h.tp_mac;
- frame_count++;
+ ctx->pkts_seen++;
if (ctx->packet_type != -1)
if (ctx->packet_type != hdr_in->s_ll.sll_pkttype)
@@ -465,14 +502,14 @@ static void receive_to_xmit(struct ctx *ctx)
show_frame_hdr(in, hdr_in->tp_h.tp_snaplen,
ctx->link_type, hdr_in, ctx->print_mode,
- frame_count);
+ ctx->pkts_seen);
dissector_entry_point(in, hdr_in->tp_h.tp_snaplen,
ctx->link_type, ctx->print_mode,
&hdr_in->s_ll);
if (frame_count_max != 0) {
- if (frame_count >= frame_count_max) {
+ if (ctx->pkts_seen >= frame_count_max) {
sigint = 1;
break;
}
@@ -499,7 +536,7 @@ next:
out:
timer_purge();
- sock_rx_net_stats(rx_sock, 0);
+ dump_rx_stats(ctx, rx_sock, false);
bpf_release(&bpf_ops);
@@ -844,26 +881,8 @@ static int begin_single_pcap_file(struct ctx *ctx)
return fd;
}
-static void print_pcap_file_stats(int sock, struct ctx *ctx)
-{
- int ret;
- struct tpacket_stats kstats;
- socklen_t slen = sizeof(kstats);
-
- fmemset(&kstats, 0, sizeof(kstats));
-
- ret = getsockopt(sock, SOL_PACKET, PACKET_STATISTICS, &kstats, &slen);
- if (unlikely(ret))
- panic("Cannot get packet statistics!\n");
-
- if (ctx->print_mode == PRINT_NONE) {
- printf(".(+%u/-%u)", kstats.tp_packets - kstats.tp_drops,
- kstats.tp_drops);
- fflush(stdout);
- }
-}
-
-static void update_pcap_next_dump(struct ctx *ctx, unsigned long snaplen, int *fd, int sock)
+static void update_pcap_next_dump(struct ctx *ctx, unsigned long snaplen,
+ int *fd, int sock, bool is_v3)
{
if (!dump_to_pcap(ctx))
return;
@@ -888,14 +907,19 @@ static void update_pcap_next_dump(struct ctx *ctx, unsigned long snaplen, int *f
*fd = next_multi_pcap_file(ctx, *fd);
next_dump = false;
- if (ctx->verbose)
- print_pcap_file_stats(sock, ctx);
+ if (update_rx_stats(ctx, sock, is_v3))
+ return;
+
+ if (ctx->verbose && ctx->print_mode == PRINT_NONE)
+ printf(".(+%lu/-%lu)",
+ ctx->pkts_recvd_last - ctx->pkts_drops_last,
+ ctx->pkts_drops_last);
}
}
#ifdef HAVE_TPACKET3
static void walk_t3_block(struct block_desc *pbd, struct ctx *ctx,
- int sock, int *fd, unsigned long *frame_count)
+ int sock, int *fd)
{
int num_pkts = pbd->h1.num_pkts, i;
struct tpacket3_hdr *hdr;
@@ -912,7 +936,7 @@ static void walk_t3_block(struct block_desc *pbd, struct ctx *ctx,
if (ctx->packet_type != sll->sll_pkttype)
goto next;
- (*frame_count)++;
+ ctx->pkts_seen++;
if (dump_to_pcap(ctx)) {
int ret;
@@ -926,7 +950,7 @@ static void walk_t3_block(struct block_desc *pbd, struct ctx *ctx,
}
__show_frame_hdr(packet, hdr->tp_snaplen, ctx->link_type, sll,
- hdr, ctx->print_mode, true, *frame_count);
+ hdr, ctx->print_mode, true, ctx->pkts_seen);
dissector_entry_point(packet, hdr->tp_snaplen, ctx->link_type,
ctx->print_mode, sll);
@@ -935,13 +959,13 @@ next:
sll = (void *) ((uint8_t *) hdr + TPACKET_ALIGN(sizeof(*hdr)));
if (frame_count_max != 0) {
- if (unlikely(*frame_count >= frame_count_max)) {
+ if (unlikely(ctx->pkts_seen >= frame_count_max)) {
sigint = 1;
break;
}
}
- update_pcap_next_dump(ctx, hdr->tp_snaplen, fd, sock);
+ update_pcap_next_dump(ctx, hdr->tp_snaplen, fd, sock, true);
}
}
#endif /* HAVE_TPACKET3 */
@@ -956,7 +980,7 @@ static void recv_only_or_dump(struct ctx *ctx)
struct pollfd rx_poll;
struct sock_fprog bpf_ops;
struct timeval start, end, diff;
- unsigned long frame_count = 0;
+ bool is_v3 = is_defined(HAVE_TPACKET3);
sock = pf_socket_type(ctx->link_type);
@@ -976,7 +1000,7 @@ static void recv_only_or_dump(struct ctx *ctx)
printf("HW timestamping enabled\n");
}
- ring_rx_setup(&rx_ring, sock, size, ifindex, &rx_poll, is_defined(HAVE_TPACKET3), true,
+ ring_rx_setup(&rx_ring, sock, size, ifindex, &rx_poll, is_v3, true,
ctx->verbose, ctx->fanout_group, ctx->fanout_type);
dissector_init_all(ctx->print_mode);
@@ -1023,7 +1047,7 @@ static void recv_only_or_dump(struct ctx *ctx)
struct block_desc *pbd;
while (user_may_pull_from_rx_block((pbd = rx_ring.frames[it].iov_base))) {
- walk_t3_block(pbd, ctx, sock, &fd, &frame_count);
+ walk_t3_block(pbd, ctx, sock, &fd);
kernel_may_pull_from_rx_block(pbd);
it = (it + 1) % rx_ring.layout3.tp_block_nr;
@@ -1041,11 +1065,11 @@ static void recv_only_or_dump(struct ctx *ctx)
if (ctx->packet_type != hdr->s_ll.sll_pkttype)
goto next;
- frame_count++;
+ ctx->pkts_seen++;
if (unlikely(ring_frame_size(&rx_ring) < hdr->tp_h.tp_snaplen)) {
/* XXX: silently ignore for now. We used to
- * report them with sock_rx_net_stats() */
+ * report them with dump_rx_stats() */
goto next;
}
@@ -1060,14 +1084,14 @@ static void recv_only_or_dump(struct ctx *ctx)
show_frame_hdr(packet, hdr->tp_h.tp_snaplen,
ctx->link_type, hdr, ctx->print_mode,
- frame_count);
+ ctx->pkts_seen);
dissector_entry_point(packet, hdr->tp_h.tp_snaplen,
ctx->link_type, ctx->print_mode,
&hdr->s_ll);
if (frame_count_max != 0) {
- if (unlikely(frame_count >= frame_count_max)) {
+ if (unlikely(ctx->pkts_seen >= frame_count_max)) {
sigint = 1;
break;
}
@@ -1080,7 +1104,8 @@ next:
if (unlikely(sigint == 1))
break;
- update_pcap_next_dump(ctx, hdr->tp_h.tp_snaplen, &fd, sock);
+ update_pcap_next_dump(ctx, hdr->tp_h.tp_snaplen, &fd,
+ sock, is_v3);
}
#endif /* HAVE_TPACKET3 */
@@ -1094,14 +1119,11 @@ next:
bug_on(gettimeofday(&end, NULL));
timersub(&end, &start, &diff);
- if (!(ctx->dump_dir && ctx->print_mode == PRINT_NONE)) {
- sock_rx_net_stats(sock, frame_count);
+ if (ctx->print_mode != PRINT_NONE) {
+ dump_rx_stats(ctx, sock, is_v3);
printf("\r%12lu sec, %lu usec in total\n",
diff.tv_sec, diff.tv_usec);
- } else {
- printf("\n\n");
- fflush(stdout);
}
bpf_release(&bpf_ops);
@@ -1146,6 +1168,12 @@ static void init_ctx(struct ctx *ctx)
ctx->promiscuous = true;
ctx->randomize = false;
ctx->hwtimestamp = true;
+
+ ctx->pkts_recvd = 0;
+ ctx->pkts_seen = 0;
+ ctx->pkts_drops = 0;
+ ctx->pkts_recvd_last = 0;
+ ctx->pkts_drops_last = 0;
}
static void destroy_ctx(struct ctx *ctx)
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-10 04:44:22 +0000