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mptcp: fix bogus socket flag values

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Dan Carpenter reports static checker warnings due to bogus BIT() usage:

net/mptcp/subflow.c:571 subflow_write_space() warn: test_bit() takes a bit number
net/mptcp/subflow.c:694 subflow_state_change() warn: test_bit() takes a bit number
net/mptcp/protocol.c:261 ssk_check_wmem() warn: test_bit() takes a bit number
[..]

This is harmless (we use bits 1 & 2 instead of 0 and 1), but would
break eventually when adding BIT(5) (or 6, depends on size of 'long').

Just use 0 and 1, the values are only passed to test/set/clear_bit
functions.

Fixes: 648ef4b886 ("mptcp: Implement MPTCP receive path")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal 2020-02-17 16:54:38 +01:00 committed by David S. Miller
parent af6565adb0
commit d99bfed58d
1 changed files with 2 additions and 2 deletions
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4
net/mptcp/protocol.h
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@ -56,8 +56,8 @@
#define MPTCP_DSS_FLAG_MASK (0x1F)
/* MPTCP socket flags */
#define MPTCP_DATA_READY BIT(0)
#define MPTCP_SEND_SPACE BIT(1)
#define MPTCP_DATA_READY 0
#define MPTCP_SEND_SPACE 1
/* MPTCP connection sock */
struct mptcp_sock {