net: Move include files outside of extern "C" block

[jukkar]

This is related to findings in #17997 and changes network
related header files to have include files outside of
extern "C" { } block.

Signed-off-by: Jukka Rissanen [email protected]

[pabigot]

Looks good assuming there are no additional #includes later in a header (I haven't checked).

Thanks for stepping up.

[pfalcon]

This PR doesn't seem to fix any bug (no "Fixes: " header). And neither the commit message not referenced #17997 explain what issue is being fixed either.

[mrfuchs]

This PR doesn't seem to fix any bug (no "Fixes: " header). And neither the commit message not referenced #17997 explain what issue is being fixed either.

@pfalcon It fixes linkage errors when including one of these header files in a C++ module. Before the original PR #17993 (referenced in #17997), this was the exact error message (thrown by GCC):

In file included from ../zephyr/include/sched_priq.h:9,
                 from ../zephyr/include/kernel_includes.h:23,
                 from ../zephyr/include/kernel.h:17,
                 from ../zephyr/include/nvs/nvs.h:15,
                 from ...:
../zephyr/include/misc/util.h:53:1: error: template with C linkage
 template < class T, size_t N >
 ^~~~~~~~
In file included ...:
../zephyr/include/nvs/nvs.h:11:1: note: 'extern "C"' linkage started here
 extern "C" {
 ^~~~~~~~~~

Sorry for not mentioning this in the commit message.

[pfalcon]

@mrfuchs: Thanks for explanation. Yes, it would have been good if more details went into the commit message.

[jukkar]

Updated the commit message.

[pfalcon]

Updated the commit message.

Thanks!

[backporting]

The backport to v1.14-branch failed:

Commits ["f341c7862a803457a2d394fd64b2364033aa1fce"] could not be cherry-picked on top of v1.14-branch

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub.
git fetch
# Create new working tree.
git worktree add .worktrees/backport v1.14-branch
# Navigate to the new directory.
cd .worktrees/backport
# Cherry-pick all the commits of this pull request and resolve the likely conflicts.
git cherry-pick f341c7862a803457a2d394fd64b2364033aa1fce
# Create a new branch with these backported commits.
git checkout -b backport-18023-to-v1.14-branch
# Push it to GitHub.
git push --set-upstream origin backport-18023-to-v1.14-branch
# Go back to the original working tree.
cd ../..
# Delete the working tree.
git worktree remove .worktrees/backport

Then, create a pull request where the base branch is v1.14-branch and the compare/head branch is backport-18023-to-v1.14-branch.