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| author | David Howells <dhowells@redhat.com> | 2020-06-07 23:50:29 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2021-04-23 12:17:26 +0300 |
| commit | 05092755aab4b7f5ec7541144c32b0744eb8d136 (patch) | |
| tree | 651259d9c50c4a5688ce1d724326f695d3081d9d | |
| parent | f105da1a798f23f386ac5c4c2d776d57088bec32 (diff) | |
| download | linux-05092755aab4b7f5ec7541144c32b0744eb8d136.tar.xz | |
afs: Log remote unmarshalling errors
Log unmarshalling errors reported by the peer (ie. it can't parse what we
sent it). Limit the maximum number of messages to 3.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-By: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/159465826250.1377938.16372395422217583913.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/160588532584.3465195.15618385466614028590.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/161118149739.1232039.208060911149801695.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/161161046033.2537118.7779717661044373273.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/161340409118.1303470.17812607349396199116.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/161539552964.286939.16503232687974398308.stgit@warthog.procyon.org.uk/ # v4
Link: https://lore.kernel.org/r/161653808989.2770958.11530765353025697860.stgit@warthog.procyon.org.uk/ # v5
Link: https://lore.kernel.org/r/161789092349.6155.8581594259882708631.stgit@warthog.procyon.org.uk/ # v6
| -rw-r--r-- | fs/afs/rxrpc.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 0ec38b758f29..ae68576f822f 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -501,6 +501,39 @@ error_kill_call: } /* + * Log remote abort codes that indicate that we have a protocol disagreement + * with the server. + */ +static void afs_log_error(struct afs_call *call, s32 remote_abort) +{ + static int max = 0; + const char *msg; + int m; + + switch (remote_abort) { + case RX_EOF: msg = "unexpected EOF"; break; + case RXGEN_CC_MARSHAL: msg = "client marshalling"; break; + case RXGEN_CC_UNMARSHAL: msg = "client unmarshalling"; break; + case RXGEN_SS_MARSHAL: msg = "server marshalling"; break; + case RXGEN_SS_UNMARSHAL: msg = "server unmarshalling"; break; + case RXGEN_DECODE: msg = "opcode decode"; break; + case RXGEN_SS_XDRFREE: msg = "server XDR cleanup"; break; + case RXGEN_CC_XDRFREE: msg = "client XDR cleanup"; break; + case -32: msg = "insufficient data"; break; + default: + return; + } + + m = max; + if (m < 3) { + max = m + 1; + pr_notice("kAFS: Peer reported %s failure on %s [%pISp]\n", + msg, call->type->name, + &call->alist->addrs[call->addr_ix].transport); + } +} + +/* * deliver messages to a call */ static void afs_deliver_to_call(struct afs_call *call) @@ -563,6 +596,7 @@ static void afs_deliver_to_call(struct afs_call *call) goto out; case -ECONNABORTED: ASSERTCMP(state, ==, AFS_CALL_COMPLETE); + afs_log_error(call, call->abort_code); goto done; case -ENOTSUPP: abort_code = RXGEN_OPCODE; |