diff options
Diffstat (limited to 'drivers/net/ethernet/rocker/rocker_tlv.c')
-rw-r--r-- | drivers/net/ethernet/rocker/rocker_tlv.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/net/ethernet/rocker/rocker_tlv.c b/drivers/net/ethernet/rocker/rocker_tlv.c new file mode 100644 index 000000000..256447b75 --- /dev/null +++ b/drivers/net/ethernet/rocker/rocker_tlv.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * drivers/net/ethernet/rocker/rocker_tlv.c - Rocker switch device driver + * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> + * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> + */ + +#include <linux/types.h> +#include <linux/string.h> +#include <linux/errno.h> + +#include "rocker_hw.h" +#include "rocker_tlv.h" + +void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype, + const char *buf, int buf_len) +{ + const struct rocker_tlv *tlv; + const struct rocker_tlv *head = (const struct rocker_tlv *) buf; + int rem; + + memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1)); + + rocker_tlv_for_each(tlv, head, buf_len, rem) { + u32 type = rocker_tlv_type(tlv); + + if (type > 0 && type <= maxtype) + tb[type] = tlv; + } +} + +int rocker_tlv_put(struct rocker_desc_info *desc_info, + int attrtype, int attrlen, const void *data) +{ + int tail_room = desc_info->data_size - desc_info->tlv_size; + int total_size = rocker_tlv_total_size(attrlen); + struct rocker_tlv *tlv; + + if (unlikely(tail_room < total_size)) + return -EMSGSIZE; + + tlv = rocker_tlv_start(desc_info); + desc_info->tlv_size += total_size; + tlv->type = attrtype; + tlv->len = rocker_tlv_attr_size(attrlen); + memcpy(rocker_tlv_data(tlv), data, attrlen); + memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen)); + return 0; +} |