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network/stack: packet writes should reach the protocol at least once

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notifications on packet protocols shouldn't ignored (for instance zero length packets).

Change-Id: I5ccf1ad492c32c50d59b9f9792456d70b29dbf32
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9781
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: waddlesplash <[email protected]>
Reviewed-by: Jérôme Duval <[email protected]>
This commit is contained in:
Jérôme Duval
2025-11-13 07:17:09 +00:00
parent 0cbc2cc115
commit 22f4b0e5f8
1 changed files with 10 additions and 5 deletions
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src/add-ons/kernel/network/stack/net_socket.cpp
+10 -5
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@@ -853,17 +853,21 @@ socket_notify(net_socket* _socket, uint8 event, int32 value)
{
net_socket_private* socket = (net_socket_private*)_socket;
bool notify = true;
bool atomic = (socket->first_info->flags & NET_PROTOCOL_ATOMIC_MESSAGES) != 0;
switch (event) {
case B_SELECT_READ:
if ((ssize_t)socket->receive.low_water_mark > value
&& value >= B_OK)
&& value >= B_OK && !atomic) {
notify = false;
}
break;
case B_SELECT_WRITE:
if ((ssize_t)socket->send.low_water_mark > value && value >= B_OK)
if ((ssize_t)socket->send.low_water_mark > value
&& value >= B_OK && !atomic) {
notify = false;
}
break;
case B_SELECT_ERROR:
@@ -1308,8 +1312,8 @@ socket_send(net_socket* socket, msghdr* header, const void* data, size_t length,
return EDESTADDRREQ;
}
if ((socket->first_info->flags & NET_PROTOCOL_ATOMIC_MESSAGES) != 0
&& bytesLeft > socket->send.buffer_size)
bool atomic = (socket->first_info->flags & NET_PROTOCOL_ATOMIC_MESSAGES) != 0;
if (atomic && bytesLeft > socket->send.buffer_size)
return EMSGSIZE;
if (socket->address.ss_len == 0) {
@@ -1354,7 +1358,7 @@ socket_send(net_socket* socket, msghdr* header, const void* data, size_t length,
size_t vecOffset = 0;
uint32 vecIndex = 0;
while (bytesLeft > 0) {
while (bytesLeft > 0 || atomic) {
// TODO: useful, maybe even computed header space!
net_buffer* buffer = gNetBufferModule.create(256);
if (buffer == NULL)
@@ -1425,6 +1429,7 @@ socket_send(net_socket* socket, msghdr* header, const void* data, size_t length,
bytesLeft -= bufferSize;
bytesSent += bufferSize;
atomic = false;
}
return bytesSent;