Commit e8671c89 authored by Jim Harris's avatar Jim Harris
Browse files

util: add spdk_net_get_interface_name 



This function provides the name of the network interface for the
given IP address.

Signed-off-by: default avatarJim Harris <jim.harris@samsung.com>
Change-Id: Ib6d2c08c98d4b4b21c52b0b42a9703125c834f99
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/24177


Reviewed-by: default avatarAleksey Marchuk <alexeymar@nvidia.com>
Community-CI: Mellanox Build Bot
Reviewed-by: default avatarKonrad Sztyber <konrad.sztyber@intel.com>
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
parent 7798a257

include/spdk/net.h

0 → 100644
+36 −0
Original line number Diff line number Diff line 
/*   SPDX-License-Identifier: BSD-3-Clause

 *   Copyright (C) 2024 Samsung Electonrics Co., Ltd.

 *   All rights reserved.

 */



/** \file

 * Network related helper functions

 */



#ifndef SPDK_NET_H

#define SPDK_NET_H



#include "spdk/stdinc.h"



#ifdef __cplusplus

extern "C" {

#endif



/**

 * Gets the name of the network interface for the given IP address.

 *

 * \param ip IP address to find the interface name for

 * \param ifc string output parameter for the interface name

 * \param len length of the ifc parameter in bytes

 *

 * \return 0 if successful, the interface name will be copied to the ifc parameter

 *         -ENODEV if an interface name could not be identified

 *         -ENOMEM the provided ifc string was too small

 */

int spdk_net_get_interface_name(const char *ip, char *ifc, size_t len);



#ifdef __cplusplus

}

#endif



#endif /* SPDK_NET_H */

lib/util/Makefile

+2 −2
Original line number Diff line number Diff line
@@ -10,8 +10,8 @@ SO_VER := 10 
SO_MINOR := 0



C_SRCS = base64.c bit_array.c cpuset.c crc16.c crc32.c crc32c.c crc32_ieee.c crc64.c \

	 dif.c fd.c file.c hexlify.c iov.c math.c pipe.c strerror_tls.c string.c uuid.c \

	 fd_group.c xor.c zipf.c

	 dif.c fd.c fd_group.c file.c hexlify.c iov.c math.c net.c \

	 pipe.c strerror_tls.c string.c uuid.c xor.c zipf.c

LIBNAME = util



ifneq ($(OS),FreeBSD)

lib/util/net.c

0 → 100644
+39 −0
Original line number Diff line number Diff line 
/*   SPDX-License-Identifier: BSD-3-Clause

 *   Copyright (C) 2021 Intel Corporation. All rights reserved.

 *   Copyright (C) 2024 Samsung Electronics Co., Ltd.

 *   All rights reserved.

 */



#include "spdk/stdinc.h"

#include "spdk/net.h"



int

spdk_net_get_interface_name(const char *ip, char *ifc, size_t len)

{

	struct ifaddrs *addrs, *iap;

	struct sockaddr_in *sa;

	char buf[32];

	int rc = -ENODEV;



	getifaddrs(&addrs);

	for (iap = addrs; iap != NULL; iap = iap->ifa_next) {

		if (!(iap->ifa_addr && (iap->ifa_flags & IFF_UP) && iap->ifa_addr->sa_family == AF_INET)) {

			continue;

		}

		sa = (struct sockaddr_in *)(iap->ifa_addr);

		inet_ntop(iap->ifa_addr->sa_family, &sa->sin_addr, buf, sizeof(buf));

		if (strcmp(ip, buf) != 0) {

			continue;

		}

		if (strnlen(iap->ifa_name, len) == len) {

			rc = -ENOMEM;

			goto ret;

		}

		snprintf(ifc, len, "%s", iap->ifa_name);

		rc = 0;

		break;

	}

ret:

	freeifaddrs(addrs);

	return rc;

}

lib/util/spdk_util.map

+3 −0
Original line number Diff line number Diff line
@@ -104,6 +104,9 @@ 
	spdk_hexlify;

	spdk_unhexlify;



	# public functions in net.h

	spdk_net_get_interface_name;



	# public functions in pipe.h

	spdk_pipe_create;

	spdk_pipe_destroy;

test/unit/lib/util/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ SPDK_ROOT_DIR := $(abspath $(CURDIR)/../../../..) 
include $(SPDK_ROOT_DIR)/mk/spdk.common.mk



DIRS-y = base64.c bit_array.c cpuset.c crc16.c crc32_ieee.c crc32c.c crc64.c dif.c \

	 file.c iov.c math.c pipe.c string.c xor.c

	 file.c iov.c math.c net.c pipe.c string.c xor.c



.PHONY: all clean $(DIRS-y)