Commit bee3a7b0 authored by Tushar Vyavahare's avatar Tushar Vyavahare Committed by Daniel Borkmann
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selftests/bpf: Implement set_hw_ring_size function to configure interface ring size 



Introduce a new function called set_hw_ring_size that allows for the
dynamic configuration of the ring size within the interface.

Signed-off-by: default avatarTushar Vyavahare <tushar.vyavahare@intel.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarMagnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20240402114529.545475-5-tushar.vyavahare@intel.com
parent 90a695c3

tools/testing/selftests/bpf/network_helpers.c

+24 −0
Original line number Diff line number Diff line
@@ -521,3 +521,27 @@ int get_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param) 
	close(sockfd);

	return 0;

}



int set_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param)

{

	struct ifreq ifr = {0};

	int sockfd, err;



	sockfd = socket(AF_INET, SOCK_DGRAM, 0);

	if (sockfd < 0)

		return -errno;



	memcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));



	ring_param->cmd = ETHTOOL_SRINGPARAM;

	ifr.ifr_data = (char *)ring_param;



	if (ioctl(sockfd, SIOCETHTOOL, &ifr) < 0) {

		err = errno;

		close(sockfd);

		return -err;

	}



	close(sockfd);

	return 0;

}

tools/testing/selftests/bpf/network_helpers.h

+1 −0
Original line number Diff line number Diff line
@@ -65,6 +65,7 @@ int make_sockaddr(int family, const char *addr_str, __u16 port, 
char *ping_command(int family);

int get_socket_local_port(int sock_fd);

int get_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param);

int set_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param);



struct nstoken;

/**