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Force sockaddr_storage to the desired alignment

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First configure nuttx to support ipv4 and ipv6 dual stack,
then start two simulators and run Iperf ipv4 udp speed test,
unaligned access exception to sockaddr_in occours.

The root cause is that struct sockaddr_storage isn't set to
the desired alignment.

Signed-off-by: luojun1 <luojun1@xiaomi.com>
This commit is contained in:
luojun1 2022-10-27 10:59:51 +08:00 committed by Alan Carvalho de Assis
parent 290a9157eb
commit 8a5dc0ba12
1 changed files with 10 additions and 3 deletions
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13
include/sys/socket.h
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@ -279,6 +279,12 @@
#define SCM_CREDENTIALS 0x02 /* rw: struct ucred */
#define SCM_SECURITY 0x03 /* rw: security label */
/* Desired design of maximum size and alignment (see RFC2553) */
#define SS_MAXSIZE 128 /* Implementation specific max size */
#define SS_ALIGNSIZE (sizeof(FAR struct sockaddr *))
/* Implementation specific desired alignment */
/****************************************************************************
* Type Definitions
****************************************************************************/
@ -292,9 +298,10 @@
struct sockaddr_storage
{
sa_family_t ss_family; /* Address family */
char ss_data[126]; /* 126-bytes of address data */
};
sa_family_t ss_family; /* Address family */
char ss_data[SS_MAXSIZE - sizeof(sa_family_t)];
}
aligned_data(SS_ALIGNSIZE); /* Force desired alignment */
/* The sockaddr structure is used to define a socket address which is used
* in the bind(), connect(), getpeername(), getsockname(), recvfrom(), and