rxrpc: Fix Tx ring annotation after initial Tx failure

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rxrpc calls have a ring of packets that are awaiting ACK or retransmission
and a parallel ring of annotations that tracks the state of those packets.
If the initial transmission of a packet on the underlying UDP socket fails
then the packet annotation is marked for resend - but the setting of this
mark accidentally erases the last-packet mark also stored in the same
annotation slot.  If this happens, a call won't switch out of the Tx phase
when all the packets have been transmitted.

Fix this by retaining the last-packet mark and only altering the packet
state.

Fixes: 248f219cb8 ("rxrpc: Rewrite the data and ack handling code")
Signed-off-by: David Howells <dhowells@redhat.com>

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This commit is contained in:

David Howells 2018-03-30 21:04:43 +01:00

parent f82eb88b0f

commit 03877bf6a3

1 changed files with 3 additions and 1 deletions

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net/rxrpc/sendmsg.c

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