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-rw-r--r--Documentation/networking/can.txt25
-rw-r--r--Documentation/networking/gen_stats.txt2
-rw-r--r--Documentation/networking/stmmac.txt1
3 files changed, 26 insertions, 2 deletions
diff --git a/Documentation/networking/can.txt b/Documentation/networking/can.txt
index d58ff8467953..aa15b9ee2e70 100644
--- a/Documentation/networking/can.txt
+++ b/Documentation/networking/can.txt
@@ -31,6 +31,7 @@ This file contains
4.2.4 Broadcast Manager message sequence transmission
4.2.5 Broadcast Manager receive filter timers
4.2.6 Broadcast Manager multiplex message receive filter
+ 4.2.7 Broadcast Manager CAN FD support
4.3 connected transport protocols (SOCK_SEQPACKET)
4.4 unconnected transport protocols (SOCK_DGRAM)
@@ -799,7 +800,7 @@ solution for a couple of reasons:
} mytxmsg;
(..)
- mytxmsg.nframes = 4;
+ mytxmsg.msg_head.nframes = 4;
(..)
write(s, &mytxmsg, sizeof(mytxmsg));
@@ -852,6 +853,28 @@ solution for a couple of reasons:
write(s, &msg, sizeof(msg));
+ 4.2.7 Broadcast Manager CAN FD support
+
+ The programming API of the CAN_BCM depends on struct can_frame which is
+ given as array directly behind the bcm_msg_head structure. To follow this
+ schema for the CAN FD frames a new flag 'CAN_FD_FRAME' in the bcm_msg_head
+ flags indicates that the concatenated CAN frame structures behind the
+ bcm_msg_head are defined as struct canfd_frame.
+
+ struct {
+ struct bcm_msg_head msg_head;
+ struct canfd_frame frame[5];
+ } msg;
+
+ msg.msg_head.opcode = RX_SETUP;
+ msg.msg_head.can_id = 0x42;
+ msg.msg_head.flags = CAN_FD_FRAME;
+ msg.msg_head.nframes = 5;
+ (..)
+
+ When using CAN FD frames for multiplex filtering the MUX mask is still
+ expected in the first 64 bit of the struct canfd_frame data section.
+
4.3 connected transport protocols (SOCK_SEQPACKET)
4.4 unconnected transport protocols (SOCK_DGRAM)
diff --git a/Documentation/networking/gen_stats.txt b/Documentation/networking/gen_stats.txt
index ff630a87b511..179b18ce45ff 100644
--- a/Documentation/networking/gen_stats.txt
+++ b/Documentation/networking/gen_stats.txt
@@ -21,7 +21,7 @@ struct mystruct {
...
};
-Update statistics:
+Update statistics, in dequeue() methods only, (while owning qdisc->running)
mystruct->tstats.packet++;
mystruct->qstats.backlog += skb->pkt_len;
diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt
index 671fe3dd56d3..e226f8925c9e 100644
--- a/Documentation/networking/stmmac.txt
+++ b/Documentation/networking/stmmac.txt
@@ -285,6 +285,7 @@ Please see the following document:
o mmc_core.c/mmc.h: Management MAC Counters;
o stmmac_hwtstamp.c: HW timestamp support for PTP;
o stmmac_ptp.c: PTP 1588 clock;
+ o stmmac_pcs.h: Physical Coding Sublayer common implementation;
o dwmac-<XXX>.c: these are for the platform glue-logic file; e.g. dwmac-sti.c
for STMicroelectronics SoCs.