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| author | Alexei Starovoitov <ast@plumgrid.com> | 2015-05-11 15:19:48 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-12 23:09:52 -0400 |
| commit | 9eea92226407e7a117ef1ceef45380ebd000a0e2 (patch) | |
| tree | 03e230448302879dc3f7bd25601e1d22fa129c5f /net/core/pktgen.c | |
| parent | 147ef3e218eab03e84f165e8352728719f5d7be4 (diff) | |
| download | linux-9eea92226407e7a117ef1ceef45380ebd000a0e2.tar.gz linux-9eea92226407e7a117ef1ceef45380ebd000a0e2.tar.bz2 linux-9eea92226407e7a117ef1ceef45380ebd000a0e2.zip | |
pktgen: fix packet generation
pkt_gen->last_ok was not set properly, so after the first burst
pktgen instead of allocating new packet, will reuse old one, advance
eth_type_trans further, which would mean the stack will be seeing very
short bogus packets.
Fixes: 62f64aed622b ("pktgen: introduce xmit_mode '<start_xmit|netif_receive>'")
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/pktgen.c')
| -rw-r--r-- | net/core/pktgen.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index 8f2687da058e..62f979984a23 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -1189,6 +1189,16 @@ static ssize_t pktgen_if_write(struct file *file, return -ENOTSUPP; pkt_dev->xmit_mode = M_NETIF_RECEIVE; + + /* make sure new packet is allocated every time + * pktgen_xmit() is called + */ + pkt_dev->last_ok = 1; + + /* override clone_skb if user passed default value + * at module loading time + */ + pkt_dev->clone_skb = 0; } else { sprintf(pg_result, "xmit_mode -:%s:- unknown\nAvailable modes: %s", @@ -3415,7 +3425,6 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev) /* get out of the loop and wait * until skb is consumed */ - pkt_dev->last_ok = 1; break; } /* skb was 'freed' by stack, so clean few |