xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Tükrözés 0
Kód Hibajegyek Egyesítési kérések Actions Packages Projektek Kiadások Wiki Tevékenység

isdn/gigaset: honor CAPI application's buffer size request

Forráskód böngészése 
Fix the Gigaset CAPI driver to limit the length of a connection's
payload data receive buffers to the corresponding CAPI application's
data buffer size, as some real-life CAPI applications tend to be
rather unhappy if they receive bigger data blocks than requested.

Impact: bugfix
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tilman Schmidt
2010-06-21 13:54:19 +00:00
committed by David S. Miller
szülő ed770f0136
commit e7752ee280
6 fájl változott, egészen pontosan 94 új sor hozzáadva és 112 régi sor törölve
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/isdn/gigaset/i4l.c
Fájl megtekintése

@@ -16,7 +16,10 @@
#include "gigaset.h"
#include <linux/isdnif.h>
#define SBUFSIZE 4096 /* sk_buff payload size */
#define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */
#define HW_HDR_LEN 2 /* Header size used to store ack info */
#define MAX_BUF_SIZE (SBUFSIZE - HW_HDR_LEN) /* max data packet from LL */
/* == Handling of I4L IO =====================================================*/
@@ -231,6 +234,15 @@ static int command_from_LL(isdn_ctrl *cntrl)
dev_err(cs->dev, "ISDN_CMD_DIAL: channel not free\n");
return -EBUSY;
}
switch (bcs->proto2) {
case L2_HDLC:
bcs->rx_bufsize = SBUFSIZE;
break;
default: /* assume transparent */
bcs->rx_bufsize = TRANSBUFSIZE;
}
dev_kfree_skb(bcs->rx_skb);
gigaset_new_rx_skb(bcs);
commands = kzalloc(AT_NUM*(sizeof *commands), GFP_ATOMIC);
if (!commands) {
@@ -314,6 +326,15 @@ static int command_from_LL(isdn_ctrl *cntrl)
return -EINVAL;
}
bcs = cs->bcs + ch;
switch (bcs->proto2) {
case L2_HDLC:
bcs->rx_bufsize = SBUFSIZE;
break;
default: /* assume transparent */
bcs->rx_bufsize = TRANSBUFSIZE;
}
dev_kfree_skb(bcs->rx_skb);
gigaset_new_rx_skb(bcs);
if (!gigaset_add_event(cs, &bcs->at_state,
EV_ACCEPT, NULL, 0, NULL))
return -ENOMEM;