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| author | Amit Kumar Salecha <amit.salecha@qlogic.com> | 2011-04-12 17:05:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-04-13 11:53:11 -0700 |
| commit | 91a403caf0f26c71ce4407fd235b2d6fb225fba9 (patch) | |
| tree | 9c542d7ab98275d87e32eb97056025a14b520b16 /drivers/net/qlcnic/qlcnic.h | |
| parent | 7c9f6472d46d07000c197e1d24fa2a332606968e (diff) | |
| download | kernel_samsung_crespo-91a403caf0f26c71ce4407fd235b2d6fb225fba9.zip kernel_samsung_crespo-91a403caf0f26c71ce4407fd235b2d6fb225fba9.tar.gz kernel_samsung_crespo-91a403caf0f26c71ce4407fd235b2d6fb225fba9.tar.bz2 | |
qlcnic: limit skb frags for non tso packet
Machines are getting deadlock in four node cluster environment.
All nodes are accessing (find /gfs2 -depth -print|cpio -ocv > /dev/null)
200 GB storage on a GFS2 filesystem.
This result in memory fragmentation and driver receives 18 frags for
1448 byte packets.
For non tso packet, fw drops the tx request, if it has >14 frags.
Fixing it by pulling extra frags.
Cc: stable@kernel.org
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/qlcnic/qlcnic.h')
| -rw-r--r-- | drivers/net/qlcnic/qlcnic.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h index dc44564..b0dead0 100644 --- a/drivers/net/qlcnic/qlcnic.h +++ b/drivers/net/qlcnic/qlcnic.h @@ -99,6 +99,7 @@ #define TX_UDPV6_PKT 0x0c /* Tx defines */ +#define QLCNIC_MAX_FRAGS_PER_TX 14 #define MAX_TSO_HEADER_DESC 2 #define MGMT_CMD_DESC_RESV 4 #define TX_STOP_THRESH ((MAX_SKB_FRAGS >> 2) + MAX_TSO_HEADER_DESC \ |