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net: Make the netconsole buffer size configurable

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Allow a board to configure a larger buffer for netconsole, but leave
the default.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Joe Hershberger 2012-07-31 06:09:17 +00:00
parent dcd5a593f5
commit 2c8fe5120f
2 changed files with 8 additions and 2 deletions
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2
doc/README.NetConsole
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@ -6,6 +6,8 @@ serial and network input/output devices by adjusting the 'stdin' and
set either of these variables to "nc". Input and output can be
switched independently.
CONFIG_NETCONSOLE_BUFFER_SIZE - Override the default buffer size
We use an environment variable 'ncip' to set the IP address and the
port of the destination. The format is <ip_addr>:<port>. If <port> is
omitted, the value of 6666 is used. If the env var doesn't exist, the

8
drivers/net/netconsole.c
View File

@ -28,7 +28,11 @@
DECLARE_GLOBAL_DATA_PTR;
static char input_buffer[512];
#ifndef CONFIG_NETCONSOLE_BUFFER_SIZE
#define CONFIG_NETCONSOLE_BUFFER_SIZE 512
#endif
static char input_buffer[CONFIG_NETCONSOLE_BUFFER_SIZE];
static int input_size; /* char count in input buffer */
static int input_offset; /* offset to valid chars in input buffer */
static int input_recursion;
@ -214,7 +218,7 @@ static void nc_puts(const char *s)
len = strlen(s);
while (len) {
int send_len = min(len, 512);
int send_len = min(len, sizeof(input_buffer));
nc_send_packet(s, send_len);
len -= send_len;
s += send_len;