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Date: Wed, 25 Feb 2015 18:04:17 +0200 From: Vadim Kochan <vadim4j@...il.com> To: stephen@...workplumber.org Cc: netdev@...r.kernel.org, Vadim Kochan <vadim4j@...il.com> Subject: [PATCH iproute2] lib: Replace 16384 netlink buf by macro From: Vadim Kochan <vadim4j@...il.com> Replaced hard coded 16384 sized netlink message buffer by NL_BUF(x) macro. Buffer size can be overrided by -DNLBUF_SIZE. Signed-off-by: Vadim Kochan <vadim4j@...il.com> --- include/libnetlink.h | 6 ++++++ ip/iplink.c | 2 +- lib/libnetlink.c | 8 ++++---- misc/ss.c | 2 +- 4 files changed, 12 insertions(+), 6 deletions(-) diff --git a/include/libnetlink.h b/include/libnetlink.h index 898275b..883f581 100644 --- a/include/libnetlink.h +++ b/include/libnetlink.h @@ -170,5 +170,11 @@ extern int rtnl_from_file(FILE *, rtnl_filter_t handler, * messages from dump file */ #define NLMSG_TSTAMP 15 +#ifndef NLBUF_SIZE +#define NLBUF_SIZE 16384 +#endif + +#define NL_BUF(b) char b[NLBUF_SIZE] + #endif /* __LIBNETLINK_H__ */ diff --git a/ip/iplink.c b/ip/iplink.c index 5893ee4..b9949a8 100644 --- a/ip/iplink.c +++ b/ip/iplink.c @@ -770,7 +770,7 @@ int iplink_get(unsigned int flags, char *name, __u32 filt_mask) { int len; struct iplink_req req; - char answer[16384]; + NL_BUF(answer); memset(&req, 0, sizeof(req)); diff --git a/lib/libnetlink.c b/lib/libnetlink.c index 77e07ef..1f7a173 100644 --- a/lib/libnetlink.c +++ b/lib/libnetlink.c @@ -194,7 +194,7 @@ int rtnl_dump_filter_l(struct rtnl_handle *rth, .msg_iov = &iov, .msg_iovlen = 1, }; - char buf[16384]; + NL_BUF(buf); int dump_intr = 0; iov.iov_base = buf; @@ -317,7 +317,7 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer, .msg_iov = &iov, .msg_iovlen = 1, }; - char buf[16384]; + NL_BUF(buf); memset(&nladdr, 0, sizeof(nladdr)); nladdr.nl_family = AF_NETLINK; @@ -432,7 +432,7 @@ int rtnl_listen(struct rtnl_handle *rtnl, .msg_iov = &iov, .msg_iovlen = 1, }; - char buf[16384]; + NL_BUF(buf); memset(&nladdr, 0, sizeof(nladdr)); nladdr.nl_family = AF_NETLINK; @@ -498,7 +498,7 @@ int rtnl_from_file(FILE *rtnl, rtnl_filter_t handler, { int status; struct sockaddr_nl nladdr; - char buf[16384]; + NL_BUF(buf); struct nlmsghdr *h = (void*)buf; memset(&nladdr, 0, sizeof(nladdr)); diff --git a/misc/ss.c b/misc/ss.c index 21a4366..0bd110f 100644 --- a/misc/ss.c +++ b/misc/ss.c @@ -2222,7 +2222,7 @@ Exit: static int tcp_show_netlink_file(struct filter *f) { FILE *fp; - char buf[16384]; + NL_BUF(buf); if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) { perror("fopen($TCPDIAG_FILE)"); -- 2.2.2 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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