summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/fcoe
diff options
context:
space:
mode:
authorAlexander Duyck <alexanderduyck@fb.com>2022-05-13 20:33:57 +0200
committerDavid S. Miller <davem@davemloft.net>2022-05-16 11:18:55 +0200
commit7c4e983c4f3cf94fcd879730c6caa877e0768a4d (patch)
tree2cdd11e3c643ddf1bd7a15e5c8eecaf2e1d18f22 /drivers/scsi/fcoe
parentnet: add IFLA_TSO_{MAX_SIZE|SEGS} attributes (diff)
downloadlinux-7c4e983c4f3cf94fcd879730c6caa877e0768a4d.tar.xz
linux-7c4e983c4f3cf94fcd879730c6caa877e0768a4d.zip
net: allow gso_max_size to exceed 65536
The code for gso_max_size was added originally to allow for debugging and workaround of buggy devices that couldn't support TSO with blocks 64K in size. The original reason for limiting it to 64K was because that was the existing limits of IPv4 and non-jumbogram IPv6 length fields. With the addition of Big TCP we can remove this limit and allow the value to potentially go up to UINT_MAX and instead be limited by the tso_max_size value. So in order to support this we need to go through and clean up the remaining users of the gso_max_size value so that the values will cap at 64K for non-TCPv6 flows. In addition we can clean up the GSO_MAX_SIZE value so that 64K becomes GSO_LEGACY_MAX_SIZE and UINT_MAX will now be the upper limit for GSO_MAX_SIZE. v6: (edumazet) fixed a compile error if CONFIG_IPV6=n, in a new sk_trim_gso_size() helper. netif_set_tso_max_size() caps the requested TSO size with GSO_MAX_SIZE. Signed-off-by: Alexander Duyck <alexanderduyck@fb.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/scsi/fcoe')
-rw-r--r--drivers/scsi/fcoe/fcoe.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 44ca6110213c..79b2827e4081 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -667,7 +667,7 @@ static void fcoe_netdev_features_change(struct fc_lport *lport,
if (netdev->features & NETIF_F_FSO) {
lport->seq_offload = 1;
- lport->lso_max = netdev->gso_max_size;
+ lport->lso_max = min(netdev->gso_max_size, GSO_LEGACY_MAX_SIZE);
FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n",
lport->lso_max);
} else {