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| author | Roland Dreier <rolandd@cisco.com> | 2007-10-09 19:59:04 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-10-09 19:59:04 -0700 |
| commit | ce423ef50ee1b6b7db63c748034423aa0afce224 (patch) | |
| tree | 9504d23398a8c03ca99e4a2fecdaee45b540a077 | |
| parent | e54664c0958acf14ef3a65d1b78f4a54b437cdf7 (diff) | |
| download | kernel_samsung_smdk4412-ce423ef50ee1b6b7db63c748034423aa0afce224.zip kernel_samsung_smdk4412-ce423ef50ee1b6b7db63c748034423aa0afce224.tar.gz kernel_samsung_smdk4412-ce423ef50ee1b6b7db63c748034423aa0afce224.tar.bz2 | |
IPoIB: Make sure no receives are handled when stopping device
The current IPoIB code might process receive completions from
ipoib_drain_cq() when bringing down the interface. This could cause
packets to be passed up the stack without the device's poll method
being called. Avoid this by setting the status of any successful
completions to IB_WC_WR_FLUSH_ERR.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_ib.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c index 1094488..5a70e28 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c @@ -558,6 +558,14 @@ void ipoib_drain_cq(struct net_device *dev) do { n = ib_poll_cq(priv->cq, IPOIB_NUM_WC, priv->ibwc); for (i = 0; i < n; ++i) { + /* + * Convert any successful completions to flush + * errors to avoid passing packets up the + * stack after bringing the device down. + */ + if (priv->ibwc[i].status == IB_WC_SUCCESS) + priv->ibwc[i].status = IB_WC_WR_FLUSH_ERR; + if (priv->ibwc[i].wr_id & IPOIB_CM_OP_SRQ) ipoib_cm_handle_rx_wc(dev, priv->ibwc + i); else if (priv->ibwc[i].wr_id & IPOIB_OP_RECV) |