diff options
| author | raj <raj@FreeBSD.org> | 2009-02-17 15:39:16 +0000 |
|---|---|---|
| committer | raj <raj@FreeBSD.org> | 2009-02-17 15:39:16 +0000 |
| commit | 3fe0ff5e6c57f42cb5b0400f2ce2ba42d4e251f7 (patch) | |
| tree | 44be20ebe563c3d61b325acff97197eb187e1206 /sys/dev/tsec | |
| parent | fbfe9d5998e0c33fb0b816846504c03461b5cb56 (diff) | |
| download | FreeBSD-src-3fe0ff5e6c57f42cb5b0400f2ce2ba42d4e251f7.zip FreeBSD-src-3fe0ff5e6c57f42cb5b0400f2ce2ba42d4e251f7.tar.gz | |
Handle mbuf exhaustion scenario in tsec(4).
Without this fix the system would hang under heavy networking load.
Submitted by: Leon Theunissen leon ! parsec dot co dot za
Diffstat (limited to 'sys/dev/tsec')
| -rw-r--r-- | sys/dev/tsec/if_tsec.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/dev/tsec/if_tsec.c b/sys/dev/tsec/if_tsec.c index bde6aed..d6d5edd 100644 --- a/sys/dev/tsec/if_tsec.c +++ b/sys/dev/tsec/if_tsec.c @@ -1332,7 +1332,12 @@ tsec_receive_intr_locked(struct tsec_softc *sc, int count) if (tsec_new_rxbuf(sc->tsec_rx_mtag, rx_data[i].map, &rx_data[i].mbuf, &rx_data[i].paddr)) { ifp->if_ierrors++; - continue; + /* + * We ran out of mbufs; didn't consume current + * descriptor and have to return it to the queue. + */ + TSEC_BACK_CUR_RX_DESC(sc); + break; } /* Attach new buffer to descriptor and clear flags */ |
