From: Chris Metcalf <cmetcalf@tilera.com>
To: <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>
Subject: [PATCH 02/12] tile: avoid bug in tilepro net driver built with old hypervisor
Date: Wed, 31 Jul 2013 11:05:04 -0400 [thread overview]
Message-ID: <689af33d3dd10d94ab71d177182055680a5a48a0.1375283105.git.cmetcalf@tilera.com> (raw)
In-Reply-To: <cover.1375283104.git.cmetcalf@tilera.com>
Building against headers from an older Tilera hypervisor can cause
the frags[] array to be overrun. Don't enable TSO in that case.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
---
drivers/net/ethernet/tile/tilepro.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/tile/tilepro.c b/drivers/net/ethernet/tile/tilepro.c
index 63fd9cc..cb67df7 100644
--- a/drivers/net/ethernet/tile/tilepro.c
+++ b/drivers/net/ethernet/tile/tilepro.c
@@ -1933,7 +1933,7 @@ static int tile_net_tx(struct sk_buff *skb, struct net_device *dev)
unsigned int csum_start = skb_checksum_start_offset(skb);
- lepp_frag_t frags[LEPP_MAX_FRAGS];
+ lepp_frag_t frags[1 + MAX_SKB_FRAGS];
unsigned int num_frags;
@@ -1948,7 +1948,7 @@ static int tile_net_tx(struct sk_buff *skb, struct net_device *dev)
unsigned int cmd_head, cmd_tail, cmd_next;
unsigned int comp_tail;
- lepp_cmd_t cmds[LEPP_MAX_FRAGS];
+ lepp_cmd_t cmds[1 + MAX_SKB_FRAGS];
/*
@@ -2342,8 +2342,9 @@ static void tile_net_setup(struct net_device *dev)
/* We support scatter/gather. */
dev->features |= NETIF_F_SG;
- /* We support TSO. */
- dev->features |= NETIF_F_TSO;
+ /* We support TSO iff the HV supports sufficient frags. */
+ if (LEPP_MAX_FRAGS >= 1 + MAX_SKB_FRAGS)
+ dev->features |= NETIF_F_TSO;
#ifdef TILE_NET_GSO
/* We support GSO. */
--
1.8.3.1
next prev parent reply other threads:[~2013-07-31 15:21 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-23 20:05 [PATCH 00/13] update tile network drivers Chris Metcalf
2013-07-23 20:05 ` [PATCH 04/13] tile: remove dead is_dup_ack() function from tilepro net driver Chris Metcalf
2013-07-23 20:05 ` [PATCH 03/13] tile: avoid bug in tilepro net driver built with old hypervisor Chris Metcalf
2013-07-23 20:05 ` [PATCH 11/13] tile: support TSO for IPv6 in tilegx network driver Chris Metcalf
2013-07-23 20:05 ` [PATCH 02/13] tile: support rx_dropped/rx_errors in tilepro net driver Chris Metcalf
2013-07-23 20:05 ` [PATCH 08/13] tile: fix panic bug in napi support for tilegx network driver Chris Metcalf
2013-07-23 20:05 ` [PATCH 01/13] tile: handle 64-bit statistics in tilepro " Chris Metcalf
2013-07-24 9:31 ` David Miller
2013-07-25 16:41 ` [PATCH v2] " Chris Metcalf
2013-07-30 23:16 ` David Miller
2013-07-31 0:34 ` Chris Metcalf
2013-07-31 0:36 ` David Miller
2013-07-23 20:05 ` [PATCH 07/13] tile: update dev->stats directly in tilegx " Chris Metcalf
2013-07-23 20:05 ` [PATCH 05/13] tile: support PTP using the tilegx mPIPE (IEEE 1588) Chris Metcalf
2013-07-24 6:25 ` Richard Cochran
2013-07-24 6:29 ` Richard Cochran
2013-07-24 16:17 ` Chris Metcalf
2013-07-25 15:19 ` [PATCH v2] " Chris Metcalf
2013-07-25 17:55 ` Richard Cochran
2013-07-23 20:05 ` [PATCH 09/13] tile: enable GRO in the tilegx network driver Chris Metcalf
2013-07-23 21:19 ` Eric Dumazet
2013-07-23 22:26 ` Chris Metcalf
2013-07-23 20:05 ` [PATCH 12/13] tile: make "tile_net.custom" a proper bool module parameter Chris Metcalf
2013-07-23 20:05 ` [PATCH 10/13] tile: support multiple mPIPE shims in tilegx network driver Chris Metcalf
2013-07-23 20:05 ` [PATCH 13/13] tile: remove deprecated NETIF_F_LLTX flag from tile drivers Chris Metcalf
2013-07-23 20:05 ` [PATCH 06/13] tile: support jumbo frames in the tilegx network driver Chris Metcalf
2013-07-31 15:05 ` [PATCH v2 00/12] update tile network drivers Chris Metcalf
2013-07-31 15:05 ` [PATCH 03/12] tile: remove dead is_dup_ack() function from tilepro net driver Chris Metcalf
2013-07-31 15:05 ` [PATCH 04/12] tile: support jumbo frames in the tilegx network driver Chris Metcalf
2013-07-31 15:05 ` [PATCH 06/12] tile: fix panic bug in napi support for " Chris Metcalf
2013-07-31 15:05 ` [PATCH 01/12] tile: support rx_dropped/rx_errors in tilepro net driver Chris Metcalf
2013-07-31 15:05 ` [PATCH 11/12] tile: remove deprecated NETIF_F_LLTX flag from tile drivers Chris Metcalf
2013-07-31 15:05 ` [PATCH 12/12] tile: support PTP using the tilegx mPIPE (IEEE 1588) Chris Metcalf
2013-07-31 15:05 ` [PATCH 10/12] tile: make "tile_net.custom" a proper bool module parameter Chris Metcalf
2013-07-31 15:05 ` [PATCH 07/12] tile: enable GRO in the tilegx network driver Chris Metcalf
2013-07-31 15:05 ` [PATCH 09/12] tile: support TSO for IPv6 in " Chris Metcalf
2013-07-31 19:25 ` David Miller
2013-08-01 15:36 ` [PATCH v2 13/12] tile: set hw_features and vlan_features in setup Chris Metcalf
2013-08-01 18:31 ` David Miller
2013-08-01 19:25 ` [PATCH v3 00/13] update tile network drivers Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 02/13] tile: support rx_dropped/rx_errors in tilepro net driver Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 06/13] tile: update dev->stats directly in tilegx network driver Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 08/13] tile: enable GRO in the " Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 09/13] tile: support multiple mPIPE shims in " Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 05/13] tile: support jumbo frames in the " Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 04/13] tile: remove dead is_dup_ack() function from tilepro net driver Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 03/13] tile: avoid bug in tilepro net driver built with old hypervisor Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 13/13] tile: support PTP using the tilegx mPIPE (IEEE 1588) Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 10/13] tile: support TSO for IPv6 in tilegx network driver Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 12/13] tile: remove deprecated NETIF_F_LLTX flag from tile drivers Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 01/13] tile: set hw_features and vlan_features in setup Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 07/13] tile: fix panic bug in napi support for tilegx network driver Chris Metcalf
2013-08-01 15:36 ` [PATCH v3 11/13] tile: make "tile_net.custom" a proper bool module parameter Chris Metcalf
2013-08-01 21:42 ` [PATCH v3 00/13] update tile network drivers David Miller
2013-07-31 15:05 ` [PATCH 08/12] tile: support multiple mPIPE shims in tilegx network driver Chris Metcalf
2013-07-31 15:05 ` Chris Metcalf [this message]
2013-07-31 15:05 ` [PATCH 05/12] tile: update dev->stats directly " Chris Metcalf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=689af33d3dd10d94ab71d177182055680a5a48a0.1375283105.git.cmetcalf@tilera.com \
--to=cmetcalf@tilera.com \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).