net: add net_alloc_packets helper

We have a number of drivers that call net_alloc_packet in a loop and
will gain some more in the quest to drop NetRxPackets.
Let's provide a helper that can be used for this and a function to free
the packets as well.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20240313110704.1095554-2-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/net.h b/include/net.h
index ffc1093ae6..38fd6f8d3c 100644
--- a/include/net.h
+++ b/include/net.h
@@ -551,6 +551,14 @@ static inline char *net_alloc_packet(void)
 	return dma_alloc(PKTSIZE);
 }
 
+static inline void net_free_packet(char *pkt)
+{
+	return dma_free(pkt);
+}
+
+int net_alloc_packets(void **packets, int count);
+void net_free_packets(void **packets, unsigned count);
+
 struct net_connection *net_udp_new(IPaddr_t dest, uint16_t dport,
 		rx_handler_f *handler, void *ctx);